900917872 has 20 divisors (see below), whose sum is σ = 1746044496. Its totient is φ = 450325760.

The previous prime is 900917867. The next prime is 900917911. The reversal of 900917872 is 278719009.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69573 + ... + 81499.

Almost surely, 2^900917872 is an apocalyptic number.

It is an amenable number.

900917872 is a deficient number, since it is larger than the sum of its proper divisors (845126624).

900917872 is a wasteful number, since it uses less digits than its factorization.

900917872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16656 (or 16650 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 900917872 is about 30015.2939682423. The cubic root of 900917872 is about 965.8174937088.

The spelling of 900917872 in words is "nine hundred million, nine hundred seventeen thousand, eight hundred seventy-two".