90004805 has 32 divisors (see below), whose sum is σ = 126973440. Its totient is φ = 60540480.

The previous prime is 90004801. The next prime is 90004841. The reversal of 90004805 is 50840009.

It is not a de Polignac number, because 90004805 - 2² = 90004801 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90004801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43934 + ... + 45936.

It is an arithmetic number, because the mean of its divisors is an integer number (3967920).

Almost surely, 2^90004805 is an apocalyptic number.

90004805 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90004805 is a deficient number, since it is larger than the sum of its proper divisors (36968635).

90004805 is a wasteful number, since it uses less digits than its factorization.

90004805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 90004805 is about 9487.0862228611. The cubic root of 90004805 is about 448.1484497545.

It can be divided in two parts, 90004 and 805, that added together give a palindrome (90809).

The spelling of 90004805 in words is "ninety million, four thousand, eight hundred five".