91313964 has 36 divisors (see below), whose sum is σ = 263796624. Its totient is φ = 26089632.

The previous prime is 91313947. The next prime is 91313977. The reversal of 91313964 is 46931319.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180927 + ... + 181430.

It is an arithmetic number, because the mean of its divisors is an integer number (7327684).

Almost surely, 2^91313964 is an apocalyptic number.

It is an amenable number.

91313964 is an abundant number, since it is smaller than the sum of its proper divisors (172482660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91313964 is a wasteful number, since it uses less digits than its factorization.

91313964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362374 (or 362369 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 91313964 is about 9555.8340295340. The cubic root of 91313964 is about 450.3108370920.

The spelling of 91313964 in words is "ninety-one million, three hundred thirteen thousand, nine hundred sixty-four".