91430963 has 4 divisors (see below), whose sum is σ = 98464128. Its totient is φ = 84397800.

The previous prime is 91430951. The next prime is 91430971. The reversal of 91430963 is 36903419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91430963 - 2¹⁴ = 91414579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91430263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3516563 + ... + 3516588.

It is an arithmetic number, because the mean of its divisors is an integer number (24616032).

Almost surely, 2^91430963 is an apocalyptic number.

91430963 is a deficient number, since it is larger than the sum of its proper divisors (7033165).

91430963 is a wasteful number, since it uses less digits than its factorization.

91430963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033164.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 91430963 is about 9561.9539321208. The cubic root of 91430963 is about 450.5030801673.

The spelling of 91430963 in words is "ninety-one million, four hundred thirty thousand, nine hundred sixty-three".