772991929 has 2 divisors, whose sum is σ = 772991930. Its totient is φ = 772991928.

The previous prime is 772991917. The next prime is 772991957. The reversal of 772991929 is 929199277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 770895225 + 2096704 = 27765^2 + 1448^2 .

It is a cyclic number.

It is not a de Polignac number, because 772991929 - 2¹⁷ = 772860857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 772991929.

It is not a weakly prime, because it can be changed into another prime (772995929) 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 as a sum of consecutive naturals, namely, 386495964 + 386495965.

It is an arithmetic number, because the mean of its divisors is an integer number (386495965).

Almost surely, 2^772991929 is an apocalyptic number.

It is an amenable number.

772991929 is a deficient number, since it is larger than the sum of its proper divisors (1).

772991929 is an equidigital number, since it uses as much as digits as its factorization.

772991929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1285956, while the sum is 55.

The square root of 772991929 is about 27802.7324016903. The cubic root of 772991929 is about 917.7512537171.

The spelling of 772991929 in words is "seven hundred seventy-two million, nine hundred ninety-one thousand, nine hundred twenty-nine".