899873 has 4 divisors (see below), whose sum is σ = 969108. Its totient is φ = 830640.

The previous prime is 899863. The next prime is 899881. The reversal of 899873 is 378998.

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 247009 + 652864 = 497^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 899873 - 2⁸ = 899617 is a prime.

It is a super-2 number, since 2×899873² = 1619542832258, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (899863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34598 + ... + 34623.

It is an arithmetic number, because the mean of its divisors is an integer number (242277).

2⁸⁹⁹⁸⁷³ is an apocalyptic number.

It is an amenable number.

899873 is a deficient number, since it is larger than the sum of its proper divisors (69235).

899873 is a wasteful number, since it uses less digits than its factorization.

899873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69234.

The product of its digits is 108864, while the sum is 44.

The square root of 899873 is about 948.6163608119. The cubic root of 899873 is about 96.5443968709.

The spelling of 899873 in words is "eight hundred ninety-nine thousand, eight hundred seventy-three".