91979695 has 8 divisors (see below), whose sum is σ = 110871936. Its totient is φ = 73252896.

The previous prime is 91979689. The next prime is 91979711. The reversal of 91979695 is 59697919.

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

It is a cyclic number.

It is not a de Polignac number, because 91979695 - 2¹⁵ = 91946927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40132 + ... + 42361.

It is an arithmetic number, because the mean of its divisors is an integer number (13858992).

Almost surely, 2^91979695 is an apocalyptic number.

91979695 is a deficient number, since it is larger than the sum of its proper divisors (18892241).

91979695 is a wasteful number, since it uses less digits than its factorization.

91979695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82721.

The product of its digits is 1377810, while the sum is 55.

The square root of 91979695 is about 9590.6045169218. The cubic root of 91979695 is about 451.4025294995.

The spelling of 91979695 in words is "ninety-one million, nine hundred seventy-nine thousand, six hundred ninety-five".