91853994 has 8 divisors (see below), whose sum is σ = 183708000. Its totient is φ = 30617996.

The previous prime is 91853989. The next prime is 91854047. The reversal of 91853994 is 49935819.

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

91853994 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7654494 + ... + 7654505.

It is an arithmetic number, because the mean of its divisors is an integer number (22963500).

Almost surely, 2^91853994 is an apocalyptic number.

91853994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91853994 is a wasteful number, since it uses less digits than its factorization.

91853994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15309004.

The product of its digits is 349920, while the sum is 48.

The square root of 91853994 is about 9584.0489356013. The cubic root of 91853994 is about 451.1968043226.

The spelling of 91853994 in words is "ninety-one million, eight hundred fifty-three thousand, nine hundred ninety-four".