900044090 has 32 divisors (see below), whose sum is σ = 1871325504. Its totient is φ = 308035840.

The previous prime is 900044059. The next prime is 900044149. The reversal of 900044090 is 90440009.

It is a super-3 number, since 3×900044090³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238784 + ... + 242523.

It is an arithmetic number, because the mean of its divisors is an integer number (58478922).

Almost surely, 2^900044090 is an apocalyptic number.

900044090 is an abundant number, since it is smaller than the sum of its proper divisors (971281414).

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

900044090 is a wasteful number, since it uses less digits than its factorization.

900044090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481342.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 900044090 is about 30000.7348243339. The cubic root of 900044090 is about 965.5051504322.

Adding to 900044090 its reverse (90440009), we get a palindrome (990484099).

The spelling of 900044090 in words is "nine hundred million, forty-four thousand, ninety".