86508739 has 2 divisors, whose sum is σ = 86508740. Its totient is φ = 86508738.

The previous prime is 86508707. The next prime is 86508757. The reversal of 86508739 is 93780568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86508739 - 2⁵ = 86508707 is a prime.

It is not a weakly prime, because it can be changed into another prime (86505739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43254369 + 43254370.

It is an arithmetic number, because the mean of its divisors is an integer number (43254370).

Almost surely, 2^86508739 is an apocalyptic number.

86508739 is a deficient number, since it is larger than the sum of its proper divisors (1).

86508739 is an equidigital number, since it uses as much as digits as its factorization.

86508739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 86508739 is about 9301.0074185542. The cubic root of 86508739 is about 442.2691640779.

The spelling of 86508739 in words is "eighty-six million, five hundred eight thousand, seven hundred thirty-nine".