91489392 has 40 divisors (see below), whose sum is σ = 262609680. Its totient is φ = 30496320.

The previous prime is 91489381. The next prime is 91489417. The reversal of 91489392 is 29398419.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105459 + ... + 106322.

It is an arithmetic number, because the mean of its divisors is an integer number (6565242).

Almost surely, 2^91489392 is an apocalyptic number.

It is an amenable number.

91489392 is an abundant number, since it is smaller than the sum of its proper divisors (171120288).

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

91489392 is a wasteful number, since it uses less digits than its factorization.

91489392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211798 (or 211786 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 91489392 is about 9565.0087297399. The cubic root of 91489392 is about 450.5990244677.

The spelling of 91489392 in words is "ninety-one million, four hundred eighty-nine thousand, three hundred ninety-two".