91958712 has 64 divisors (see below), whose sum is σ = 244645920. Its totient is φ = 28704768.

The previous prime is 91958707. The next prime is 91958719. The reversal of 91958712 is 21785919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91958719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104418 + ... + 105294.

Almost surely, 2^91958712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91958712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122322960).

91958712 is an abundant number, since it is smaller than the sum of its proper divisors (152687208).

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

91958712 is a wasteful number, since it uses less digits than its factorization.

91958712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1156 counting only the distinct ones).

The product of its digits is 45360, while the sum is 42.

The square root of 91958712 is about 9589.5105193122. The cubic root of 91958712 is about 451.3682012722.

The spelling of 91958712 in words is "ninety-one million, nine hundred fifty-eight thousand, seven hundred twelve".