772312989 has 32 divisors (see below), whose sum is σ = 1190559744. Its totient is φ = 436213440.

The previous prime is 772312967. The next prime is 772312997. The reversal of 772312989 is 989213277.

772312989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 772312989 - 2⁸ = 772312733 is a prime.

It is a super-2 number, since 2×772312989² = 1192934705956228242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772312909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1053267 + ... + 1053999.

It is an arithmetic number, because the mean of its divisors is an integer number (37204992).

Almost surely, 2^772312989 is an apocalyptic number.

It is an amenable number.

772312989 is a deficient number, since it is larger than the sum of its proper divisors (418246755).

772312989 is a wasteful number, since it uses less digits than its factorization.

772312989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257.

The product of its digits is 381024, while the sum is 48.

The square root of 772312989 is about 27790.5197684390. The cubic root of 772312989 is about 917.4824796502.

The spelling of 772312989 in words is "seven hundred seventy-two million, three hundred twelve thousand, nine hundred eighty-nine".