90554440 has 16 divisors (see below), whose sum is σ = 203747580. Its totient is φ = 36221760.

The previous prime is 90554419. The next prime is 90554459. The reversal of 90554440 is 4445509.

It can be written as a sum of positive squares in 2 ways, for example, as 88322404 + 2232036 = 9398^2 + 1494^2 .

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, 1131891 + ... + 1131970.

Almost surely, 2^90554440 is an apocalyptic number.

It is an amenable number.

90554440 is an abundant number, since it is smaller than the sum of its proper divisors (113193140).

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

90554440 is a wasteful number, since it uses less digits than its factorization.

90554440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263872 (or 2263868 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 90554440 is about 9516.0096679228. The cubic root of 90554440 is about 449.0588395500.

Adding to 90554440 its reverse (4445509), we get a palindrome (94999949).

The spelling of 90554440 in words is "ninety million, five hundred fifty-four thousand, four hundred forty".