86513279 has 2 divisors, whose sum is σ = 86513280. Its totient is φ = 86513278.

The previous prime is 86513263. The next prime is 86513333. The reversal of 86513279 is 97231568.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86513279 - 2⁴ = 86513263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86513209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43256639 + 43256640.

It is an arithmetic number, because the mean of its divisors is an integer number (43256640).

Almost surely, 2^86513279 is an apocalyptic number.

86513279 is a deficient number, since it is larger than the sum of its proper divisors (1).

86513279 is an equidigital number, since it uses as much as digits as its factorization.

86513279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 86513279 is about 9301.2514749360. The cubic root of 86513279 is about 442.2769007409.

The spelling of 86513279 in words is "eighty-six million, five hundred thirteen thousand, two hundred seventy-nine".