91914845 has 48 divisors (see below), whose sum is σ = 130408704. Its totient is φ = 61603200.

The previous prime is 91914829. The next prime is 91914847. The reversal of 91914845 is 54841919.

It is not a de Polignac number, because 91914845 - 2⁴ = 91914829 is a prime.

It is a Duffinian number.

Its product of digits (51840) is a multiple of the sum of its prime factors (162).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91914847) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1955612 + ... + 1955658.

It is an arithmetic number, because the mean of its divisors is an integer number (2716848).

Almost surely, 2^91914845 is an apocalyptic number.

It is an amenable number.

91914845 is a deficient number, since it is larger than the sum of its proper divisors (38493859).

91914845 is a wasteful number, since it uses less digits than its factorization.

91914845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 131 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 91914845 is about 9587.2230077327. The cubic root of 91914845 is about 451.2964179044.

The spelling of 91914845 in words is "ninety-one million, nine hundred fourteen thousand, eight hundred forty-five".