91486374 has 64 divisors (see below), whose sum is σ = 216359424. Its totient is φ = 25249536.

The previous prime is 91486361. The next prime is 91486399. The reversal of 91486374 is 47368419.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162217 + ... + 162779.

It is an arithmetic number, because the mean of its divisors is an integer number (3380616).

Almost surely, 2^91486374 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91486374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108179712).

91486374 is an abundant number, since it is smaller than the sum of its proper divisors (124873050).

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

91486374 is a wasteful number, since it uses less digits than its factorization.

91486374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701.

The product of its digits is 145152, while the sum is 42.

The square root of 91486374 is about 9564.8509659064. The cubic root of 91486374 is about 450.5940697118.

The spelling of 91486374 in words is "ninety-one million, four hundred eighty-six thousand, three hundred seventy-four".