91598963 has 2 divisors, whose sum is σ = 91598964. Its totient is φ = 91598962.

The previous prime is 91598951. The next prime is 91598977. The reversal of 91598963 is 36989519.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91598963 - 2²⁰ = 90550387 is a prime.

It is not a weakly prime, because it can be changed into another prime (91598993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45799481 + 45799482.

It is an arithmetic number, because the mean of its divisors is an integer number (45799482).

Almost surely, 2^91598963 is an apocalyptic number.

91598963 is a deficient number, since it is larger than the sum of its proper divisors (1).

91598963 is an equidigital number, since it uses as much as digits as its factorization.

91598963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 50.

The square root of 91598963 is about 9570.7347157885. The cubic root of 91598963 is about 450.7788372584.

The spelling of 91598963 in words is "ninety-one million, five hundred ninety-eight thousand, nine hundred sixty-three".