91979102 has 8 divisors (see below), whose sum is σ = 138074112. Its totient is φ = 45954400.

The previous prime is 91979101. The next prime is 91979123. The reversal of 91979102 is 20197919.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91979101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14174 + ... + 19617.

It is an arithmetic number, because the mean of its divisors is an integer number (17259264).

Almost surely, 2^91979102 is an apocalyptic number.

91979102 is a deficient number, since it is larger than the sum of its proper divisors (46095010).

91979102 is a wasteful number, since it uses less digits than its factorization.

91979102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35154.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 91979102 is about 9590.5736011982. The cubic root of 91979102 is about 451.4015594221.

The spelling of 91979102 in words is "ninety-one million, nine hundred seventy-nine thousand, one hundred two".