772738931 has 12 divisors (see below), whose sum is σ = 797249880. Its totient is φ = 748530720.

The previous prime is 772738919. The next prime is 772738933. The reversal of 772738931 is 139837277.

It is not a de Polignac number, because 772738931 - 2¹⁴ = 772722547 is a prime.

It is a super-2 number, since 2×772738931² = 1194250910966045522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (772738933) 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 11 ways as a sum of consecutive naturals, for example, 2038700 + ... + 2039078.

It is an arithmetic number, because the mean of its divisors is an integer number (66437490).

Almost surely, 2^772738931 is an apocalyptic number.

772738931 is a deficient number, since it is larger than the sum of its proper divisors (24510949).

772738931 is an equidigital number, since it uses as much as digits as its factorization.

772738931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 643 counting only the distinct ones).

The product of its digits is 444528, while the sum is 47.

The square root of 772738931 is about 27798.1821527955. The cubic root of 772738931 is about 917.6511170235.

The spelling of 772738931 in words is "seven hundred seventy-two million, seven hundred thirty-eight thousand, nine hundred thirty-one".