86413991 has 2 divisors, whose sum is σ = 86413992. Its totient is φ = 86413990.

The previous prime is 86413909. The next prime is 86414023. The reversal of 86413991 is 19931468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86413991 - 2¹⁰ = 86412967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86413391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43206995 + 43206996.

It is an arithmetic number, because the mean of its divisors is an integer number (43206996).

Almost surely, 2^86413991 is an apocalyptic number.

86413991 is a deficient number, since it is larger than the sum of its proper divisors (1).

86413991 is an equidigital number, since it uses as much as digits as its factorization.

86413991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 86413991 is about 9295.9125964049. The cubic root of 86413991 is about 442.1076411807.

The spelling of 86413991 in words is "eighty-six million, four hundred thirteen thousand, nine hundred ninety-one".