899812231 has 4 divisors (see below), whose sum is σ = 928838464. Its totient is φ = 870786000.

The previous prime is 899812201. The next prime is 899812247. The reversal of 899812231 is 132218998.

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 899812231 - 2⁷ = 899812103 is a prime.

It is a super-2 number, since 2×899812231² = 1619324102114394722, 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 (899812201) 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, 14513070 + ... + 14513131.

It is an arithmetic number, because the mean of its divisors is an integer number (232209616).

Almost surely, 2^899812231 is an apocalyptic number.

899812231 is a deficient number, since it is larger than the sum of its proper divisors (29026233).

899812231 is a wasteful number, since it uses less digits than its factorization.

899812231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29026232.

The product of its digits is 62208, while the sum is 43.

The square root of 899812231 is about 29996.8703534219. The cubic root of 899812231 is about 965.4222358703.

The spelling of 899812231 in words is "eight hundred ninety-nine million, eight hundred twelve thousand, two hundred thirty-one".