91380912 has 40 divisors (see below), whose sum is σ = 269792256. Its totient is φ = 26108736.

The previous prime is 91380881. The next prime is 91380917. The reversal of 91380912 is 21908319.

It is not an unprimeable number, because it can be changed into a prime (91380917) by changing a digit.

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, 135648 + ... + 136319.

Almost surely, 2^91380912 is an apocalyptic number.

It is an amenable number.

91380912 is an abundant number, since it is smaller than the sum of its proper divisors (178411344).

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

91380912 is a wasteful number, since it uses less digits than its factorization.

91380912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271985 (or 271979 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 91380912 is about 9559.3363786405. The cubic root of 91380912 is about 450.4208605902.

The spelling of 91380912 in words is "ninety-one million, three hundred eighty thousand, nine hundred twelve".