839972 has 24 divisors (see below), whose sum is σ = 1700160. Its totient is φ = 355680.

The previous prime is 839963. The next prime is 839981. The reversal of 839972 is 279938.

It is an interprime number because it is at equal distance from previous prime (839963) and next prime (839981).

It is an unprimeable number.

839972 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 7 ways as a sum of consecutive naturals, for example, 3554 + ... + 3782.

It is an arithmetic number, because the mean of its divisors is an integer number (70840).

2⁸³⁹⁹⁷² is an apocalyptic number.

It is a pronic number, being equal to 916×917.

It is an amenable number.

839972 is an abundant number, since it is smaller than the sum of its proper divisors (860188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

839972 is a wasteful number, since it uses less digits than its factorization.

839972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 369 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 839972 is about 916.4998636116. The cubic root of 839972 is about 94.3528312182.

The spelling of 839972 in words is "eight hundred thirty-nine thousand, nine hundred seventy-two".