90404480 has 32 divisors (see below), whose sum is σ = 216124740. Its totient is φ = 36161536.

The previous prime is 90404471. The next prime is 90404497. The reversal of 90404480 is 8440409.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82156096 + 8248384 = 9064^2 + 2872^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69989 + ... + 71268.

Almost surely, 2^90404480 is an apocalyptic number.

It is an amenable number.

90404480 is an abundant number, since it is smaller than the sum of its proper divisors (125720260).

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

90404480 is a wasteful number, since it uses less digits than its factorization.

90404480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141276 (or 141264 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 90404480 is about 9508.1270500557. The cubic root of 90404480 is about 448.8108190575.

Adding to 90404480 its reverse (8440409), we get a palindrome (98844889).

The spelling of 90404480 in words is "ninety million, four hundred four thousand, four hundred eighty".