899165 has 4 divisors (see below), whose sum is σ = 1079004. Its totient is φ = 719328.

The previous prime is 899161. The next prime is 899177. The reversal of 899165 is 561998.

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

It can be written as a sum of positive squares in 2 ways, for example, as 454276 + 444889 = 674^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 899165 - 2² = 899161 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 (899161) 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, 89912 + ... + 89921.

It is an arithmetic number, because the mean of its divisors is an integer number (269751).

2⁸⁹⁹¹⁶⁵ is an apocalyptic number.

It is an amenable number.

899165 is a deficient number, since it is larger than the sum of its proper divisors (179839).

899165 is a wasteful number, since it uses less digits than its factorization.

899165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179838.

The product of its digits is 19440, while the sum is 38.

The square root of 899165 is about 948.2431122871. The cubic root of 899165 is about 96.5190705685.

The spelling of 899165 in words is "eight hundred ninety-nine thousand, one hundred sixty-five".