91310459 has 2 divisors, whose sum is σ = 91310460. Its totient is φ = 91310458.

The previous prime is 91310431. The next prime is 91310509. The reversal of 91310459 is 95401319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91310459 - 2⁸ = 91310203 is a prime.

It is not a weakly prime, because it can be changed into another prime (91310059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45655229 + 45655230.

It is an arithmetic number, because the mean of its divisors is an integer number (45655230).

Almost surely, 2^91310459 is an apocalyptic number.

91310459 is a deficient number, since it is larger than the sum of its proper divisors (1).

91310459 is an equidigital number, since it uses as much as digits as its factorization.

91310459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 91310459 is about 9555.6506319559. The cubic root of 91310459 is about 450.3050754333.

The spelling of 91310459 in words is "ninety-one million, three hundred ten thousand, four hundred fifty-nine".