91090746 has 12 divisors (see below), whose sum is σ = 197363322. Its totient is φ = 30363576.

The previous prime is 91090739. The next prime is 91090793. The reversal of 91090746 is 64709019.

It can be written as a sum of positive squares in only one way, i.e., 80299521 + 10791225 = 8961^2 + 3285^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91090746.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2530281 + ... + 2530316.

Almost surely, 2^91090746 is an apocalyptic number.

91090746 is an abundant number, since it is smaller than the sum of its proper divisors (106272576).

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

91090746 is a wasteful number, since it uses less digits than its factorization.

91090746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060605 (or 5060602 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 91090746 is about 9544.1472117733. The cubic root of 91090746 is about 449.9436077483.

The spelling of 91090746 in words is "ninety-one million, ninety thousand, seven hundred forty-six".