8972440 has 32 divisors (see below), whose sum is σ = 20684160. Its totient is φ = 3500800.

The previous prime is 8972407. The next prime is 8972459. The reversal of 8972440 is 442798.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8972396 and 8972405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

Almost surely, 2^8972440 is an apocalyptic number.

It is an amenable number.

8972440 is an abundant number, since it is smaller than the sum of its proper divisors (11711720).

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

8972440 is a wasteful number, since it uses less digits than its factorization.

8972440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523 (or 5519 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 8972440 is about 2995.4031448204. The cubic root of 8972440 is about 207.7958425791.

The spelling of 8972440 in words is "eight million, nine hundred seventy-two thousand, four hundred forty".