799785431 has 2 divisors, whose sum is σ = 799785432. Its totient is φ = 799785430.

The previous prime is 799785419. The next prime is 799785433. The reversal of 799785431 is 134587997.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-799785431 is a prime.

It is a super-2 number, since 2×799785431² = 1279313471279711522, which contains 22 as substring.

Together with 799785433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (799785433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399892715 + 399892716.

It is an arithmetic number, because the mean of its divisors is an integer number (399892716).

Almost surely, 2^799785431 is an apocalyptic number.

799785431 is a deficient number, since it is larger than the sum of its proper divisors (1).

799785431 is an equidigital number, since it uses as much as digits as its factorization.

799785431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 53.

The square root of 799785431 is about 28280.4779132178. The cubic root of 799785431 is about 928.2347642118.

The spelling of 799785431 in words is "seven hundred ninety-nine million, seven hundred eighty-five thousand, four hundred thirty-one".