899231 has 4 divisors (see below), whose sum is σ = 938352. Its totient is φ = 860112.

The previous prime is 899221. The next prime is 899233. The reversal of 899231 is 132998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132998 = 2 ⋅66499.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-899231 is a prime.

It is a super-2 number, since 2×899231² = 1617232782722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 899231.

It is not an unprimeable number, because it can be changed into a prime (899233) 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, 19526 + ... + 19571.

It is an arithmetic number, because the mean of its divisors is an integer number (234588).

2⁸⁹⁹²³¹ is an apocalyptic number.

899231 is a deficient number, since it is larger than the sum of its proper divisors (39121).

899231 is a wasteful number, since it uses less digits than its factorization.

899231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39120.

The product of its digits is 3888, while the sum is 32.

The square root of 899231 is about 948.2779128504. The cubic root of 899231 is about 96.5214320568.

The spelling of 899231 in words is "eight hundred ninety-nine thousand, two hundred thirty-one".