79859749 has 8 divisors (see below), whose sum is σ = 83427840. Its totient is φ = 76299696.

The previous prime is 79859723. The next prime is 79859783. The reversal of 79859749 is 94795897.

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 79859749 - 2⁹ = 79859237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79859693 and 79859702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79859449) 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, 28012 + ... + 30730.

It is an arithmetic number, because the mean of its divisors is an integer number (10428480).

Almost surely, 2^79859749 is an apocalyptic number.

It is an amenable number.

79859749 is a deficient number, since it is larger than the sum of its proper divisors (3568091).

79859749 is a wasteful number, since it uses less digits than its factorization.

79859749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019.

The product of its digits is 5715360, while the sum is 58.

The square root of 79859749 is about 8936.4282014684. The cubic root of 79859749 is about 430.6349893657.

It can be divided in two parts, 79859 and 749, that added together give a palindrome (80608).

The spelling of 79859749 in words is "seventy-nine million, eight hundred fifty-nine thousand, seven hundred forty-nine".