899505 has 20 divisors (see below), whose sum is σ = 1613172. Its totient is φ = 479520.

The previous prime is 899491. The next prime is 899519. The reversal of 899505 is 505998.

It is an interprime number because it is at equal distance from previous prime (899491) and next prime (899519).

It can be written as a sum of positive squares in 2 ways, for example, as 467856 + 431649 = 684^2 + 657^2 .

It is not a de Polignac number, because 899505 - 2⁵ = 899473 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 899505.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 899505.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 706 + ... + 1515.

2⁸⁹⁹⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

899505 is a deficient number, since it is larger than the sum of its proper divisors (713667).

899505 is a wasteful number, since it uses less digits than its factorization.

899505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238 (or 2229 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 899505 is about 948.4223742616. The cubic root of 899505 is about 96.5312345757.

The spelling of 899505 in words is "eight hundred ninety-nine thousand, five hundred five".