8709972 has 24 divisors (see below), whose sum is σ = 20512800. Its totient is φ = 2876256.

The previous prime is 8709971. The next prime is 8709973. The reversal of 8709972 is 2799078.

It is an interprime number because it is at equal distance from previous prime (8709971) and next prime (8709973).

It is a super-2 number, since 2×8709972² = 151727224481568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8709971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2022 + ... + 4637.

It is an arithmetic number, because the mean of its divisors is an integer number (854700).

Almost surely, 2^8709972 is an apocalyptic number.

It is an amenable number.

8709972 is an abundant number, since it is smaller than the sum of its proper divisors (11802828).

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

8709972 is a wasteful number, since it uses less digits than its factorization.

8709972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6775 (or 6773 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 8709972 is about 2951.2661689519. The cubic root of 8709972 is about 205.7495621272.

Subtracting from 8709972 its product of nonzero digits (63504), we obtain a palindrome (8646468).

The spelling of 8709972 in words is "eight million, seven hundred nine thousand, nine hundred seventy-two".