9972916 has 6 divisors (see below), whose sum is σ = 17452610. Its totient is φ = 4986456.

The previous prime is 9972913. The next prime is 9972973. The reversal of 9972916 is 6192799.

It can be written as a sum of positive squares in only one way, i.e., 5044516 + 4928400 = 2246^2 + 2220^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9972913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1246611 + ... + 1246618.

Almost surely, 2^9972916 is an apocalyptic number.

It is an amenable number.

9972916 is a deficient number, since it is larger than the sum of its proper divisors (7479694).

9972916 is a wasteful number, since it uses less digits than its factorization.

9972916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493233 (or 2493231 counting only the distinct ones).

The product of its digits is 61236, while the sum is 43.

The square root of 9972916 is about 3157.9924002442. The cubic root of 9972916 is about 215.2487907779.

The spelling of 9972916 in words is "nine million, nine hundred seventy-two thousand, nine hundred sixteen".