86407999 has 2 divisors, whose sum is σ = 86408000. Its totient is φ = 86407998.

The previous prime is 86407939. The next prime is 86408009. The reversal of 86407999 is 99970468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86407999 - 2¹⁵ = 86375231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86407939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43203999 + 43204000.

It is an arithmetic number, because the mean of its divisors is an integer number (43204000).

Almost surely, 2^86407999 is an apocalyptic number.

86407999 is a deficient number, since it is larger than the sum of its proper divisors (1).

86407999 is an equidigital number, since it uses as much as digits as its factorization.

86407999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 86407999 is about 9295.5902986309. The cubic root of 86407999 is about 442.0974222714.

The spelling of 86407999 in words is "eighty-six million, four hundred seven thousand, nine hundred ninety-nine".