86290591 has 2 divisors, whose sum is σ = 86290592. Its totient is φ = 86290590.

The previous prime is 86290559. The next prime is 86290667. The reversal of 86290591 is 19509268.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86290591 - 2⁵ = 86290559 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 (86290541) 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, 43145295 + 43145296.

It is an arithmetic number, because the mean of its divisors is an integer number (43145296).

Almost surely, 2^86290591 is an apocalyptic number.

86290591 is a deficient number, since it is larger than the sum of its proper divisors (1).

86290591 is an equidigital number, since it uses as much as digits as its factorization.

86290591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 86290591 is about 9289.2728994254. The cubic root of 86290591 is about 441.8970962918.

The spelling of 86290591 in words is "eighty-six million, two hundred ninety thousand, five hundred ninety-one".