79822749 has 16 divisors (see below), whose sum is σ = 109942272. Its totient is φ = 51482928.

The previous prime is 79822747. The next prime is 79822751. The reversal of 79822749 is 94722897.

It is an interprime number because it is at equal distance from previous prime (79822747) and next prime (79822751).

It is not a de Polignac number, because 79822749 - 2¹ = 79822747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79822698 and 79822707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79822747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10912 + ... + 16694.

It is an arithmetic number, because the mean of its divisors is an integer number (6871392).

Almost surely, 2^79822749 is an apocalyptic number.

It is an amenable number.

79822749 is a deficient number, since it is larger than the sum of its proper divisors (30119523).

79822749 is a wasteful number, since it uses less digits than its factorization.

79822749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5936.

The product of its digits is 508032, while the sum is 48.

The square root of 79822749 is about 8934.3577832993. The cubic root of 79822749 is about 430.5684729367.

It can be divided in two parts, 7982 and 2749, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 79822749 in words is "seventy-nine million, eight hundred twenty-two thousand, seven hundred forty-nine".