91379316 has 72 divisors (see below), whose sum is σ = 250331200. Its totient is φ = 25933152.

The previous prime is 91379293. The next prime is 91379317. The reversal of 91379316 is 61397319.

91379316 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

91379316 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91379317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 613210 + ... + 613358.

Almost surely, 2^91379316 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 91379316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125165600).

91379316 is an abundant number, since it is smaller than the sum of its proper divisors (158951884).

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

91379316 is a wasteful number, since it uses less digits than its factorization.

91379316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 161 counting only the distinct ones).

The product of its digits is 30618, while the sum is 39.

The square root of 91379316 is about 9559.2528996779. The cubic root of 91379316 is about 450.4182383216.

The spelling of 91379316 in words is "ninety-one million, three hundred seventy-nine thousand, three hundred sixteen".