90440474828440 has 32 divisors (see below), whose sum is σ = 221990256398160. Its totient is φ = 32887445392000.

The previous prime is 90440474828419. The next prime is 90440474828441. The reversal of 90440474828440 is 4482847404409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90440474828441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102773266411 + ... + 102773267290.

Almost surely, 2^{90440474828440} is an apocalyptic number.

It is an amenable number.

90440474828440 is an abundant number, since it is smaller than the sum of its proper divisors (131549781569720).

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

90440474828440 is a wasteful number, since it uses less digits than its factorization.

90440474828440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205546533723 (or 205546533719 counting only the distinct ones).

The product of its (nonzero) digits is 33030144, while the sum is 58.

The spelling of 90440474828440 in words is "ninety trillion, four hundred forty billion, four hundred seventy-four million, eight hundred twenty-eight thousand, four hundred forty".