900239 has 4 divisors (see below), whose sum is σ = 947640. Its totient is φ = 852840.

The previous prime is 900233. The next prime is 900241. The reversal of 900239 is 932009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932009 = 13 ⋅71693.

It is a cyclic number.

It is not a de Polignac number, because 900239 - 2¹² = 896143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23672 + ... + 23709.

It is an arithmetic number, because the mean of its divisors is an integer number (236910).

2⁹⁰⁰²³⁹ is an apocalyptic number.

900239 is a deficient number, since it is larger than the sum of its proper divisors (47401).

900239 is a wasteful number, since it uses less digits than its factorization.

900239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47400.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 900239 is about 948.8092537491. The cubic root of 900239 is about 96.5574840732.

The spelling of 900239 in words is "nine hundred thousand, two hundred thirty-nine".