91923814 has 16 divisors (see below), whose sum is σ = 139674528. Its totient is φ = 45369792.

The previous prime is 91923791. The next prime is 91923841. The reversal of 91923814 is 41832919.

It is a super-4 number, since 4×91923814⁴ (a number of 33 digits) contains 4444 as substring.

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, 51562 + ... + 53314.

It is an arithmetic number, because the mean of its divisors is an integer number (8729658).

Almost surely, 2^91923814 is an apocalyptic number.

91923814 is a deficient number, since it is larger than the sum of its proper divisors (47750714).

91923814 is a wasteful number, since it uses less digits than its factorization.

91923814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079.

The product of its digits is 15552, while the sum is 37.

The square root of 91923814 is about 9587.6907542953. The cubic root of 91923814 is about 451.3110965124.

The spelling of 91923814 in words is "ninety-one million, nine hundred twenty-three thousand, eight hundred fourteen".