79739 has 6 divisors (see below), whose sum is σ = 87780. Its totient is φ = 72380.

The previous prime is 79699. The next prime is 79757. The reversal of 79739 is 93797.

It is a de Polignac number, because none of the positive numbers 2^k-79739 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 79699 and 79708.

It is not an unprimeable number, because it can be changed into a prime (79769) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209 + ... + 450.

It is an arithmetic number, because the mean of its divisors is an integer number (14630).

2⁷⁹⁷³⁹ is an apocalyptic number.

79739 is a deficient number, since it is larger than the sum of its proper divisors (8041).

79739 is a wasteful number, since it uses less digits than its factorization.

79739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 670 counting only the distinct ones).

The product of its digits is 11907, while the sum is 35.

The square root of 79739 is about 282.3809483659. The cubic root of 79739 is about 43.0417837945.

It can be divided in two parts, 79 and 739, that added together give a palindrome (818).

The spelling of 79739 in words is "seventy-nine thousand, seven hundred thirty-nine".