900409444 has 24 divisors (see below), whose sum is σ = 1729925568. Its totient is φ = 406667040.

The previous prime is 900409441. The next prime is 900409453. The reversal of 900409444 is 444904009.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (900409441) 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, 58264 + ... + 72079.

It is an arithmetic number, because the mean of its divisors is an integer number (72080232).

Almost surely, 2^900409444 is an apocalyptic number.

It is an amenable number.

900409444 is a deficient number, since it is larger than the sum of its proper divisors (829516124).

900409444 is a wasteful number, since it uses less digits than its factorization.

900409444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130515 (or 130513 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 900409444 is about 30006.8232907117. The cubic root of 900409444 is about 965.6357749401.

The spelling of 900409444 in words is "nine hundred million, four hundred nine thousand, four hundred forty-four".