91973995 has 8 divisors (see below), whose sum is σ = 116861184. Its totient is φ = 69250944.

The previous prime is 91973983. The next prime is 91974013. The reversal of 91973995 is 59937919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91973995 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540939 + ... + 541108.

It is an arithmetic number, because the mean of its divisors is an integer number (14607648).

Almost surely, 2^91973995 is an apocalyptic number.

91973995 is a deficient number, since it is larger than the sum of its proper divisors (24887189).

91973995 is a wasteful number, since it uses less digits than its factorization.

91973995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082069.

The product of its digits is 688905, while the sum is 52.

The square root of 91973995 is about 9590.3073464827. The cubic root of 91973995 is about 451.3932048054.

The spelling of 91973995 in words is "ninety-one million, nine hundred seventy-three thousand, nine hundred ninety-five".