Numbers from 100 to 1 million in Spanish

For hundreds:

100 - cien

101 to 199 - ciento

200 to 299 - doscientos

300 to 399 - trescientos

400 to 499 - cuatrocientos

500 to 599 - quinientos[1]

600 to 699 - seiscientos

700 to 799 - setecientos[1]

800 to 899 - ochocientos

900 to 999 - novecientos[1]

[1] Irregular: it doesn't follow the number + cientos pattern.

For thousands:

1.000 - mil

2.000 - dos mil

3.000 - tres mil

etc.

For millions:

1.000.000 - un millón

2.000.000 - dos millones

etc.

In most Spanish-speaking countries we use periods instead of commas for thousands.

Hundreds from 200 through 900 have gender in Spanish. When they go before a noun, they match its gender: cuatrocientos dieciséis gatos, quinientas quince sillas.

We don't add any extra y when using hundreds. For example, 457 would be cuatrocientos cincuenta y siete; it would never be cuatrocientos "y" cincuenta y siete.