795978991 has 2 divisors, whose sum is σ = 795978992. Its totient is φ = 795978990.

The previous prime is 795978983. The next prime is 795979003. The reversal of 795978991 is 199879597.

It is a weak prime.

It is an emirp because it is prime and its reverse (199879597) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 795978991 - 2³ = 795978983 is a prime.

It is a super-2 number, since 2×795978991² = 1267165108226756162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (795975991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 397989495 + 397989496.

It is an arithmetic number, because the mean of its divisors is an integer number (397989496).

Almost surely, 2^795978991 is an apocalyptic number.

795978991 is a deficient number, since it is larger than the sum of its proper divisors (1).

795978991 is an equidigital number, since it uses as much as digits as its factorization.

795978991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12859560, while the sum is 64.

The square root of 795978991 is about 28213.0996347441. The cubic root of 795978991 is about 926.7598310630.

It can be divided in two parts, 79597 and 8991, that added together give a palindrome (88588).

The spelling of 795978991 in words is "seven hundred ninety-five million, nine hundred seventy-eight thousand, nine hundred ninety-one".