873819 has 12 divisors (see below), whose sum is σ = 1279200. Its totient is φ = 574704.

The previous prime is 873787. The next prime is 873863. The reversal of 873819 is 918378.

It is not a de Polignac number, because 873819 - 2⁵ = 873787 is a prime.

It is a super-2 number, since 2×873819² = 1527119289522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

873819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (873319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97 + ... + 1325.

It is an arithmetic number, because the mean of its divisors is an integer number (106600).

2⁸⁷³⁸¹⁹ is an apocalyptic number.

873819 is a deficient number, since it is larger than the sum of its proper divisors (405381).

873819 is a wasteful number, since it uses less digits than its factorization.

873819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314 (or 1311 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 873819 is about 934.7828624873. The cubic root of 873819 is about 95.6035079214.

The spelling of 873819 in words is "eight hundred seventy-three thousand, eight hundred nineteen".