839942 has 8 divisors (see below), whose sum is σ = 1264032. Its totient is φ = 418600.

The previous prime is 839921. The next prime is 839957. The reversal of 839942 is 249938.

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

It is a congruent number.

It is an unprimeable number.

839942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467 + ... + 1377.

It is an arithmetic number, because the mean of its divisors is an integer number (158004).

2⁸³⁹⁹⁴² is an apocalyptic number.

839942 is a deficient number, since it is larger than the sum of its proper divisors (424090).

839942 is a wasteful number, since it uses less digits than its factorization.

839942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374.

The product of its digits is 15552, while the sum is 35.

The square root of 839942 is about 916.4834968509. The cubic root of 839942 is about 94.3517079194.

The spelling of 839942 in words is "eight hundred thirty-nine thousand, nine hundred forty-two".