879649079 has 2 divisors, whose sum is σ = 879649080. Its totient is φ = 879649078.

The previous prime is 879649073. The next prime is 879649081. The reversal of 879649079 is 970946978.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879649079 is a prime.

Together with 879649081, 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 (879649073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439824539 + 439824540.

It is an arithmetic number, because the mean of its divisors is an integer number (439824540).

Almost surely, 2^879649079 is an apocalyptic number.

879649079 is a deficient number, since it is larger than the sum of its proper divisors (1).

879649079 is an equidigital number, since it uses as much as digits as its factorization.

879649079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The square root of 879649079 is about 29658.8785863525. The cubic root of 879649079 is about 958.1565749430.

It can be divided in two parts, 8796 and 49079, that added together give a palindrome (57875).

The spelling of 879649079 in words is "eight hundred seventy-nine million, six hundred forty-nine thousand, seventy-nine".