900899964 has 72 divisors (see below), whose sum is σ = 2361078720. Its totient is φ = 289296000.

The previous prime is 900899947. The next prime is 900899971. The reversal of 900899964 is 469998009.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 900899964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 731229 + ... + 732459.

It is an arithmetic number, because the mean of its divisors is an integer number (32792760).

Almost surely, 2^900899964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 900899964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1180539360).

900899964 is an abundant number, since it is smaller than the sum of its proper divisors (1460178756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

900899964 is a wasteful number, since it uses less digits than its factorization.

900899964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971 (or 1966 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 900899964 is about 30014.9956521736. The cubic root of 900899964 is about 965.8110943188.

The spelling of 900899964 in words is "nine hundred million, eight hundred ninety-nine thousand, nine hundred sixty-four".