868839079 has 2 divisors, whose sum is σ = 868839080. Its totient is φ = 868839078.

The previous prime is 868838987. The next prime is 868839113. The reversal of 868839079 is 970938868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 868839079 - 2¹³ = 868830887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868839479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434419539 + 434419540.

It is an arithmetic number, because the mean of its divisors is an integer number (434419540).

Almost surely, 2^868839079 is an apocalyptic number.

868839079 is a deficient number, since it is larger than the sum of its proper divisors (1).

868839079 is an equidigital number, since it uses as much as digits as its factorization.

868839079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The square root of 868839079 is about 29476.0763840780. The cubic root of 868839079 is about 954.2154604932.

The spelling of 868839079 in words is "eight hundred sixty-eight million, eight hundred thirty-nine thousand, seventy-nine".