9912972 has 24 divisors (see below), whose sum is σ = 24491376. Its totient is φ = 3109888.

The previous prime is 9912967. The next prime is 9912979. The reversal of 9912972 is 2792199.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9912972.

It is not an unprimeable number, because it can be changed into a prime (9912979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24093 + ... + 24500.

It is an arithmetic number, because the mean of its divisors is an integer number (1020474).

Almost surely, 2^9912972 is an apocalyptic number.

It is an amenable number.

9912972 is an abundant number, since it is smaller than the sum of its proper divisors (14578404).

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

9912972 is a wasteful number, since it uses less digits than its factorization.

9912972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48617 (or 48615 counting only the distinct ones).

The product of its digits is 20412, while the sum is 39.

The square root of 9912972 is about 3148.4872558103. The cubic root of 9912972 is about 214.8166599994.

The spelling of 9912972 in words is "nine million, nine hundred twelve thousand, nine hundred seventy-two".