772231939 has 2 divisors, whose sum is σ = 772231940. Its totient is φ = 772231938.

The previous prime is 772231927. The next prime is 772232011. The reversal of 772231939 is 939132277.

It is a weak prime.

It is an emirp because it is prime and its reverse (939132277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 772231939 - 2¹¹ = 772229891 is a prime.

It is a super-2 number, since 2×772231939² = 1192684335223399442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 772231895 and 772231904.

It is not a weakly prime, because it can be changed into another prime (772231139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386115969 + 386115970.

It is an arithmetic number, because the mean of its divisors is an integer number (386115970).

Almost surely, 2^772231939 is an apocalyptic number.

772231939 is a deficient number, since it is larger than the sum of its proper divisors (1).

772231939 is an equidigital number, since it uses as much as digits as its factorization.

772231939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 43.

The square root of 772231939 is about 27789.0614990863. The cubic root of 772231939 is about 917.4503836142.

The spelling of 772231939 in words is "seven hundred seventy-two million, two hundred thirty-one thousand, nine hundred thirty-nine".