899497872 has 400 divisors, whose sum is σ = 3327287040. Its totient is φ = 228178944.

The previous prime is 899497849. The next prime is 899497889. The reversal of 899497872 is 278794998.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3420013 + ... + 3420275.

Almost surely, 2^899497872 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 899497872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1663643520).

899497872 is an abundant number, since it is smaller than the sum of its proper divisors (2427789168).

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

899497872 is a wasteful number, since it uses less digits than its factorization.

899497872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 317 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The square root of 899497872 is about 29991.6300323940. The cubic root of 899497872 is about 965.3097959236.

The spelling of 899497872 in words is "eight hundred ninety-nine million, four hundred ninety-seven thousand, eight hundred seventy-two".