90477018 has 12 divisors (see below), whose sum is σ = 196033578. Its totient is φ = 30159000.

The previous prime is 90477017. The next prime is 90477029. The reversal of 90477018 is 81077409.

It can be written as a sum of positive squares in only one way, i.e., 78801129 + 11675889 = 8877^2 + 3417^2 .

It is not an unprimeable number, because it can be changed into a prime (90477017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2513233 + ... + 2513268.

Almost surely, 2^90477018 is an apocalyptic number.

90477018 is an abundant number, since it is smaller than the sum of its proper divisors (105556560).

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

90477018 is a wasteful number, since it uses less digits than its factorization.

90477018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026509 (or 5026506 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 90477018 is about 9511.9408114222. The cubic root of 90477018 is about 448.9308246729.

The spelling of 90477018 in words is "ninety million, four hundred seventy-seven thousand, eighteen".