900445 has 16 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 569664.

The previous prime is 900443. The next prime is 900461. The reversal of 900445 is 544009.

It is a cyclic number.

It is not a de Polignac number, because 900445 - 2¹ = 900443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535 + ... + 1444.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2⁹⁰⁰⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

900445 is a deficient number, since it is larger than the sum of its proper divisors (430115).

900445 is a wasteful number, since it uses less digits than its factorization.

900445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 900445 is about 948.9178046596. The cubic root of 900445 is about 96.5648485340.

The spelling of 900445 in words is "nine hundred thousand, four hundred forty-five".