899172 has 18 divisors (see below), whose sum is σ = 2272998. Its totient is φ = 299712.

The previous prime is 899161. The next prime is 899177. The reversal of 899172 is 271998.

It is a happy number.

899172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 509796 + 389376 = 714^2 + 624^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 24977 = 899172 / (8 + 9 + 9 + 1 + 7 + 2).

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 899172.

It is not an unprimeable number, because it can be changed into a prime (899177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12453 + ... + 12524.

2⁸⁹⁹¹⁷² is an apocalyptic number.

It is an amenable number.

899172 is an abundant number, since it is smaller than the sum of its proper divisors (1373826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

899172 is a wasteful number, since it uses less digits than its factorization.

899172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24987 (or 24982 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 899172 is about 948.2468033165. The cubic root of 899172 is about 96.5193210349.

It can be divided in two parts, 89 and 9172, that added together give a cube (9261 = 21³).

The spelling of 899172 in words is "eight hundred ninety-nine thousand, one hundred seventy-two".