79439 has 8 divisors (see below), whose sum is σ = 86640. Its totient is φ = 72576.

The previous prime is 79433. The next prime is 79451. The reversal of 79439 is 93497.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 79439 - 2⁴ = 79423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647 + ... + 759.

It is an arithmetic number, because the mean of its divisors is an integer number (10830).

2⁷⁹⁴³⁹ is an apocalyptic number.

79439 is a deficient number, since it is larger than the sum of its proper divisors (7201).

79439 is a wasteful number, since it uses less digits than its factorization.

79439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169.

The product of its digits is 6804, while the sum is 32.

The square root of 79439 is about 281.8492504869. The cubic root of 79439 is about 42.9877376248.

The spelling of 79439 in words is "seventy-nine thousand, four hundred thirty-nine".