972308939 has 8 divisors (see below), whose sum is σ = 1111400928. Its totient is φ = 833264640.

The previous prime is 972308933. The next prime is 972308947. The reversal of 972308939 is 939803279.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 972308939 - 2⁸ = 972308683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972308933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64139 + ... + 77835.

It is an arithmetic number, because the mean of its divisors is an integer number (138925116).

Almost surely, 2^972308939 is an apocalyptic number.

972308939 is a deficient number, since it is larger than the sum of its proper divisors (139091989).

972308939 is a wasteful number, since it uses less digits than its factorization.

972308939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23845.

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 972308939 is about 31181.8687541334. The cubic root of 972308939 is about 990.6831115044.

The spelling of 972308939 in words is "nine hundred seventy-two million, three hundred eight thousand, nine hundred thirty-nine".