91465388 has 48 divisors (see below), whose sum is σ = 192783360. Its totient is φ = 37122624.

The previous prime is 91465349. The next prime is 91465393. The reversal of 91465388 is 88356419.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69545 + ... + 70847.

It is an arithmetic number, because the mean of its divisors is an integer number (4016320).

Almost surely, 2^91465388 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 91465388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96391680).

91465388 is an abundant number, since it is smaller than the sum of its proper divisors (101317972).

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

91465388 is a wasteful number, since it uses less digits than its factorization.

91465388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446 (or 1444 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 91465388 is about 9563.7538655070. The cubic root of 91465388 is about 450.5596132499.

The spelling of 91465388 in words is "ninety-one million, four hundred sixty-five thousand, three hundred eighty-eight".