899982972 has 72 divisors (see below), whose sum is σ = 2609539296. Its totient is φ = 256189824.

The previous prime is 899982961. The next prime is 899982973. The reversal of 899982972 is 279289998.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899982973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63358 + ... + 76250.

Almost surely, 2^899982972 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 899982972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304769648).

899982972 is an abundant number, since it is smaller than the sum of its proper divisors (1709556324).

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

899982972 is a wasteful number, since it uses less digits than its factorization.

899982972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13187 (or 13182 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 899982972 is about 29999.7161986576. The cubic root of 899982972 is about 965.4832955475.

The spelling of 899982972 in words is "eight hundred ninety-nine million, nine hundred eighty-two thousand, nine hundred seventy-two".