91954164 has 12 divisors (see below), whose sum is σ = 214559744. Its totient is φ = 30651384.

The previous prime is 91954151. The next prime is 91954169. The reversal of 91954164 is 46145919.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91954169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3831412 + ... + 3831435.

Almost surely, 2^91954164 is an apocalyptic number.

It is an amenable number.

91954164 is an abundant number, since it is smaller than the sum of its proper divisors (122605580).

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

91954164 is a wasteful number, since it uses less digits than its factorization.

91954164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7662854 (or 7662852 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 91954164 is about 9589.2733822746. The cubic root of 91954164 is about 451.3607600472.

The spelling of 91954164 in words is "ninety-one million, nine hundred fifty-four thousand, one hundred sixty-four".