900559 has 4 divisors (see below), whose sum is σ = 982440. Its totient is φ = 818680.

The previous prime is 900553. The next prime is 900563. The reversal of 900559 is 955009.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 900559 - 2³ = 900551 is a prime.

It is a super-2 number, since 2×900559² = 1622013024962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40924 + ... + 40945.

It is an arithmetic number, because the mean of its divisors is an integer number (245610).

2⁹⁰⁰⁵⁵⁹ is an apocalyptic number.

900559 is a deficient number, since it is larger than the sum of its proper divisors (81881).

900559 is a wasteful number, since it uses less digits than its factorization.

900559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81880.

The product of its (nonzero) digits is 2025, while the sum is 28.

The square root of 900559 is about 948.9778711856. The cubic root of 900559 is about 96.5689235296.

The spelling of 900559 in words is "nine hundred thousand, five hundred fifty-nine".