91074474 has 24 divisors (see below), whose sum is σ = 208936260. Its totient is φ = 28572288.

The previous prime is 91074463. The next prime is 91074481. The reversal of 91074474 is 47447019.

It can be written as a sum of positive squares in 2 ways, for example, as 91068849 + 5625 = 9543^2 + 75^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148509 + ... + 149120.

Almost surely, 2^91074474 is an apocalyptic number.

91074474 is an abundant number, since it is smaller than the sum of its proper divisors (117861786).

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

91074474 is a wasteful number, since it uses less digits than its factorization.

91074474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297654 (or 297651 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 91074474 is about 9543.2947140911. The cubic root of 91074474 is about 449.9168142531.

The spelling of 91074474 in words is "ninety-one million, seventy-four thousand, four hundred seventy-four".