90104004 has 36 divisors (see below), whose sum is σ = 239752240. Its totient is φ = 28453680.

The previous prime is 90103999. The next prime is 90104017. The reversal of 90104004 is 40040109.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 65182 + ... + 66549.

Almost surely, 2^90104004 is an apocalyptic number.

It is an amenable number.

90104004 is an abundant number, since it is smaller than the sum of its proper divisors (149648236).

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

90104004 is a wasteful number, since it uses less digits than its factorization.

90104004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131760 (or 131755 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 90104004 is about 9492.3128899126. The cubic root of 90104004 is about 448.3130319146.

The spelling of 90104004 in words is "ninety million, one hundred four thousand, four".