96931972921 has 27 divisors (see below), whose sum is σ = 114406187301. Its totient is φ = 81887138424.

The previous prime is 96931972889. The next prime is 96931972933. The reversal of 96931972921 is 12927913969.

The square root of 96931972921 is 311339.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 96931972921 - 2⁵ = 96931972889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (96931970921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 172170186 + ... + 172170748.

Almost surely, 2^96931972921 is an apocalyptic number.

96931972921 is the 311339-th square number.

96931972921 is the 155670-th centered octagonal number.

It is an amenable number.

96931972921 is a deficient number, since it is larger than the sum of its proper divisors (17474214380).

96931972921 is an frugal number, since it uses more digits than its factorization.

96931972921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298 (or 649 counting only the distinct ones).

The product of its digits is 3306744, while the sum is 58.

The spelling of 96931972921 in words is "ninety-six billion, nine hundred thirty-one million, nine hundred seventy-two thousand, nine hundred twenty-one".