799391563 has 2 divisors, whose sum is σ = 799391564. Its totient is φ = 799391562.

The previous prime is 799391521. The next prime is 799391573. The reversal of 799391563 is 365193997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 799391563 - 2²⁹ = 262520651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 799391563.

It is not a weakly prime, because it can be changed into another prime (799391573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399695781 + 399695782.

It is an arithmetic number, because the mean of its divisors is an integer number (399695782).

Almost surely, 2^799391563 is an apocalyptic number.

799391563 is a deficient number, since it is larger than the sum of its proper divisors (1).

799391563 is an equidigital number, since it uses as much as digits as its factorization.

799391563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1377810, while the sum is 52.

The square root of 799391563 is about 28273.5134534072. The cubic root of 799391563 is about 928.0823641689.

The spelling of 799391563 in words is "seven hundred ninety-nine million, three hundred ninety-one thousand, five hundred sixty-three".