90474594 has 64 divisors (see below), whose sum is σ = 218916864. Its totient is φ = 24368256.

The previous prime is 90474581. The next prime is 90474607. The reversal of 90474594 is 49547409.

It is an interprime number because it is at equal distance from previous prime (90474581) and next prime (90474607).

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

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, 69877 + ... + 71159.

It is an arithmetic number, because the mean of its divisors is an integer number (3420576).

Almost surely, 2^90474594 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90474594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109458432).

90474594 is an abundant number, since it is smaller than the sum of its proper divisors (128442270).

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

90474594 is a wasteful number, since it uses less digits than its factorization.

90474594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 90474594 is about 9511.8133917776. The cubic root of 90474594 is about 448.9268154852.

The spelling of 90474594 in words is "ninety million, four hundred seventy-four thousand, five hundred ninety-four".