91790854 has 16 divisors (see below), whose sum is σ = 146772000. Its totient is φ = 42903424.

The previous prime is 91790849. The next prime is 91790893. The reversal of 91790854 is 45809719.

It is a self number, because there is not a number n which added to its sum of digits gives 91790854.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3994 + ... + 14125.

It is an arithmetic number, because the mean of its divisors is an integer number (9173250).

Almost surely, 2^91790854 is an apocalyptic number.

91790854 is a deficient number, since it is larger than the sum of its proper divisors (54981146).

91790854 is a wasteful number, since it uses less digits than its factorization.

91790854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18287.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 91790854 is about 9580.7543544337. The cubic root of 91790854 is about 451.0933971104.

The spelling of 91790854 in words is "ninety-one million, seven hundred ninety thousand, eight hundred fifty-four".