90975474 has 40 divisors (see below), whose sum is σ = 208839708. Its totient is φ = 29583360.

The previous prime is 90975473. The next prime is 90975491. The reversal of 90975474 is 47457909.

90975474 is a `hidden beast` number, since 90 + 97 + 5 + 474 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 62299449 + 28676025 = 7893^2 + 5355^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (90975473) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 207 + ... + 13490.

Almost surely, 2^90975474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90975474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104419854).

90975474 is an abundant number, since it is smaller than the sum of its proper divisors (117864234).

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

90975474 is a wasteful number, since it uses less digits than its factorization.

90975474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13752 (or 13743 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 90975474 is about 9538.1064158459. The cubic root of 90975474 is about 449.7537319180.

The spelling of 90975474 in words is "ninety million, nine hundred seventy-five thousand, four hundred seventy-four".