7929972 has 36 divisors (see below), whose sum is σ = 20172516. Its totient is φ = 2626560.

The previous prime is 7929953. The next prime is 7929979. The reversal of 7929972 is 2799297.

It can be written as a sum of positive squares in 2 ways, for example, as 992016 + 6937956 = 996^2 + 2634^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7929979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5908 + ... + 7124.

Almost surely, 2^7929972 is an apocalyptic number.

It is an amenable number.

7929972 is an abundant number, since it is smaller than the sum of its proper divisors (12242544).

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

7929972 is a wasteful number, since it uses less digits than its factorization.

7929972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408 (or 1403 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 7929972 is about 2816.0205965156. The cubic root of 7929972 is about 199.4147222539.

The spelling of 7929972 in words is "seven million, nine hundred twenty-nine thousand, nine hundred seventy-two".