879999613 has 2 divisors, whose sum is σ = 879999614. Its totient is φ = 879999612.

The previous prime is 879999607. The next prime is 879999629. The reversal of 879999613 is 316999978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721567044 + 158432569 = 26862^2 + 12587^2 .

It is a cyclic number.

It is not a de Polignac number, because 879999613 - 2²⁹ = 343128701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (879999643) 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, 439999806 + 439999807.

It is an arithmetic number, because the mean of its divisors is an integer number (439999807).

Almost surely, 2^879999613 is an apocalyptic number.

It is an amenable number.

879999613 is a deficient number, since it is larger than the sum of its proper divisors (1).

879999613 is an equidigital number, since it uses as much as digits as its factorization.

879999613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6613488, while the sum is 61.

The square root of 879999613 is about 29664.7874254983. The cubic root of 879999613 is about 958.2838309368.

The spelling of 879999613 in words is "eight hundred seventy-nine million, nine hundred ninety-nine thousand, six hundred thirteen".