799156979 has 2 divisors, whose sum is σ = 799156980. Its totient is φ = 799156978.

The previous prime is 799156909. The next prime is 799156997. The reversal of 799156979 is 979651997.

Together with next prime (799156997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 799156979 - 2¹² = 799152883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (799156909) 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, 399578489 + 399578490.

It is an arithmetic number, because the mean of its divisors is an integer number (399578490).

Almost surely, 2^799156979 is an apocalyptic number.

799156979 is a deficient number, since it is larger than the sum of its proper divisors (1).

799156979 is an equidigital number, since it uses as much as digits as its factorization.

799156979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9644670, while the sum is 62.

The square root of 799156979 is about 28269.3646727336. The cubic root of 799156979 is about 927.9915723788.

The spelling of 799156979 in words is "seven hundred ninety-nine million, one hundred fifty-six thousand, nine hundred seventy-nine".