9973972 has 12 divisors (see below), whose sum is σ = 17478720. Its totient is φ = 4980056.

The previous prime is 9973967. The next prime is 9973981. The reversal of 9973972 is 2793799.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2853 + ... + 5299.

It is an arithmetic number, because the mean of its divisors is an integer number (1456560).

Almost surely, 2^9973972 is an apocalyptic number.

It is an amenable number.

9973972 is a deficient number, since it is larger than the sum of its proper divisors (7504748).

9973972 is a wasteful number, since it uses less digits than its factorization.

9973972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470 (or 3468 counting only the distinct ones).

The product of its digits is 214326, while the sum is 46.

The square root of 9973972 is about 3158.1595906477. The cubic root of 9973972 is about 215.2563878439.

The spelling of 9973972 in words is "nine million, nine hundred seventy-three thousand, nine hundred seventy-two".