8791972 has 36 divisors (see below), whose sum is σ = 18488064. Its totient is φ = 3643920.

The previous prime is 8791933. The next prime is 8791987. The reversal of 8791972 is 2791978.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5353 + ... + 6799.

Almost surely, 2^8791972 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 8791972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9244032).

8791972 is an abundant number, since it is smaller than the sum of its proper divisors (9696092).

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

8791972 is a wasteful number, since it uses less digits than its factorization.

8791972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496 (or 1487 counting only the distinct ones).

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

The square root of 8791972 is about 2965.1259669700. The cubic root of 8791972 is about 206.3932225906.

The spelling of 8791972 in words is "eight million, seven hundred ninety-one thousand, nine hundred seventy-two".