869943 has 8 divisors (see below), whose sum is σ = 1164400. Its totient is φ = 577728.

The previous prime is 869927. The next prime is 869951. The reversal of 869943 is 349968.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 869943 - 2⁴ = 869927 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 (869983) 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 7 ways as a sum of consecutive naturals, for example, 873 + ... + 1581.

It is an arithmetic number, because the mean of its divisors is an integer number (145550).

2⁸⁶⁹⁹⁴³ is an apocalyptic number.

869943 is a deficient number, since it is larger than the sum of its proper divisors (294457).

869943 is a wasteful number, since it uses less digits than its factorization.

869943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121.

The product of its digits is 46656, while the sum is 39.

The square root of 869943 is about 932.7073496011. The cubic root of 869943 is about 95.4619422015.

The spelling of 869943 in words is "eight hundred sixty-nine thousand, nine hundred forty-three".