9931972 has 6 divisors (see below), whose sum is σ = 17380958. Its totient is φ = 4965984.

The previous prime is 9931951. The next prime is 9932009. The reversal of 9931972 is 2791399.

It can be written as a sum of positive squares in only one way, i.e., 5875776 + 4056196 = 2424^2 + 2014^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1241493 + ... + 1241500.

Almost surely, 2^9931972 is an apocalyptic number.

It is an amenable number.

9931972 is a deficient number, since it is larger than the sum of its proper divisors (7448986).

9931972 is a wasteful number, since it uses less digits than its factorization.

9931972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482997 (or 2482995 counting only the distinct ones).

The product of its digits is 30618, while the sum is 40.

The square root of 9931972 is about 3151.5031334270. The cubic root of 9931972 is about 214.9538173746.

The spelling of 9931972 in words is "nine million, nine hundred thirty-one thousand, nine hundred seventy-two".