972779507 has 6 divisors (see below), whose sum is σ = 1131600708. Its totient is φ = 833810964.

The previous prime is 972779501. The next prime is 972779527. The reversal of 972779507 is 705977279.

It is not a de Polignac number, because 972779507 - 2²² = 968585203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (972779501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9926273 + ... + 9926370.

It is an arithmetic number, because the mean of its divisors is an integer number (188600118).

Almost surely, 2^972779507 is an apocalyptic number.

972779507 is a deficient number, since it is larger than the sum of its proper divisors (158821201).

972779507 is a wasteful number, since it uses less digits than its factorization.

972779507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19852657 (or 19852650 counting only the distinct ones).

The product of its (nonzero) digits is 1944810, while the sum is 53.

The square root of 972779507 is about 31189.4133801840. The cubic root of 972779507 is about 990.8429059092.

The spelling of 972779507 in words is "nine hundred seventy-two million, seven hundred seventy-nine thousand, five hundred seven".