90000404 has 24 divisors (see below), whose sum is σ = 170096640. Its totient is φ = 41421024.

The previous prime is 90000401. The next prime is 90000433. The reversal of 90000404 is 40400009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90000401) 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, 17657 + ... + 22175.

It is an arithmetic number, because the mean of its divisors is an integer number (7087360).

Almost surely, 2^90000404 is an apocalyptic number.

It is an amenable number.

90000404 is a deficient number, since it is larger than the sum of its proper divisors (80096236).

90000404 is a wasteful number, since it uses less digits than its factorization.

90000404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919 (or 4917 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 90000404 is about 9486.8542731508. The cubic root of 90000404 is about 448.1411452056.

The spelling of 90000404 in words is "ninety million, four hundred four", and thus it is an aban number.