790917889 has 2 divisors, whose sum is σ = 790917890. Its totient is φ = 790917888.

The previous prime is 790917863. The next prime is 790917943. The reversal of 790917889 is 988719097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 616677889 + 174240000 = 24833^2 + 13200^2 .

It is an emirp because it is prime and its reverse (988719097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 790917889 - 2¹⁹ = 790393601 is a prime.

It is a super-2 number, since 2×790917889² = 1251102214280432642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (790917289) 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, 395458944 + 395458945.

It is an arithmetic number, because the mean of its divisors is an integer number (395458945).

Almost surely, 2^790917889 is an apocalyptic number.

It is an amenable number.

790917889 is a deficient number, since it is larger than the sum of its proper divisors (1).

790917889 is an equidigital number, since it uses as much as digits as its factorization.

790917889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 58.

The square root of 790917889 is about 28123.2624174366. The cubic root of 790917889 is about 924.7914363964.

The spelling of 790917889 in words is "seven hundred ninety million, nine hundred seventeen thousand, eight hundred eighty-nine".