79749 has 6 divisors (see below), whose sum is σ = 115206. Its totient is φ = 53160.

The previous prime is 79699. The next prime is 79757. The reversal of 79749 is 94797.

It can be written as a sum of positive squares in only one way, i.e., 79524 + 225 = 282^2 + 15^2 .

It is not a de Polignac number, because 79749 - 2⁷ = 79621 is a prime.

It is a Curzon number.

It is a congruent number.

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, 4422 + ... + 4439.

It is an arithmetic number, because the mean of its divisors is an integer number (19201).

2⁷⁹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

79749 is a deficient number, since it is larger than the sum of its proper divisors (35457).

79749 is a wasteful number, since it uses less digits than its factorization.

79749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8867 (or 8864 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 79749 is about 282.3986543877. The cubic root of 79749 is about 43.0435829970.

It can be divided in two parts, 79 and 749, that added together give a palindrome (828).

The spelling of 79749 in words is "seventy-nine thousand, seven hundred forty-nine".