86579279 has 2 divisors, whose sum is σ = 86579280. Its totient is φ = 86579278.

The previous prime is 86579267. The next prime is 86579287. The reversal of 86579279 is 97297568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86579279 - 2²⁰ = 85530703 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86579279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86579179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43289639 + 43289640.

It is an arithmetic number, because the mean of its divisors is an integer number (43289640).

Almost surely, 2^86579279 is an apocalyptic number.

86579279 is a deficient number, since it is larger than the sum of its proper divisors (1).

86579279 is an equidigital number, since it uses as much as digits as its factorization.

86579279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The square root of 86579279 is about 9304.7987081935. The cubic root of 86579279 is about 442.3893414974.

The spelling of 86579279 in words is "eighty-six million, five hundred seventy-nine thousand, two hundred seventy-nine".