899853 has 4 divisors (see below), whose sum is σ = 1199808. Its totient is φ = 599900.

The previous prime is 899851. The next prime is 899863. The reversal of 899853 is 358998.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 899853 - 2¹ = 899851 is a prime.

It is a D-number.

899853 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899851) 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, 149973 + ... + 149978.

It is an arithmetic number, because the mean of its divisors is an integer number (299952).

2⁸⁹⁹⁸⁵³ is an apocalyptic number.

It is an amenable number.

899853 is a deficient number, since it is larger than the sum of its proper divisors (299955).

899853 is a wasteful number, since it uses less digits than its factorization.

899853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299954.

The product of its digits is 77760, while the sum is 42.

The square root of 899853 is about 948.6058190840. The cubic root of 899853 is about 96.5436816210.

Subtracting from 899853 its sum of digits (42), we obtain a triangular number (899811 = T₁₃₄₁).

The spelling of 899853 in words is "eight hundred ninety-nine thousand, eight hundred fifty-three".