900221396 has 24 divisors (see below), whose sum is σ = 1620460296. Its totient is φ = 437270400.

The previous prime is 900221323. The next prime is 900221429. The reversal of 900221396 is 693122009.

It can be written as a sum of positive squares in 4 ways, for example, as 372876100 + 527345296 = 19310^2 + 22964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99410 + ... + 108086.

It is an arithmetic number, because the mean of its divisors is an integer number (67519179).

Almost surely, 2^900221396 is an apocalyptic number.

It is an amenable number.

900221396 is a deficient number, since it is larger than the sum of its proper divisors (720238900).

900221396 is a wasteful number, since it uses less digits than its factorization.

900221396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9419 (or 9417 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 900221396 is about 30003.6897064344. The cubic root of 900221396 is about 965.5685468140.

The spelling of 900221396 in words is "nine hundred million, two hundred twenty-one thousand, three hundred ninety-six".