79828749 has 48 divisors (see below), whose sum is σ = 154836864. Its totient is φ = 38275200.

The previous prime is 79828733. The next prime is 79828799. The reversal of 79828749 is 94782897.

It is not a de Polignac number, because 79828749 - 2⁴ = 79828733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79828695 and 79828704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79828799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4579 + ... + 13439.

It is an arithmetic number, because the mean of its divisors is an integer number (3225768).

Almost surely, 2^79828749 is an apocalyptic number.

It is an amenable number.

79828749 is a deficient number, since it is larger than the sum of its proper divisors (75008115).

79828749 is a wasteful number, since it uses less digits than its factorization.

79828749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8898 (or 8895 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 79828749 is about 8934.6935593785. The cubic root of 79828749 is about 430.5792607808.

It can be divided in two parts, 79 and 828749, that added together give a palindrome (828828).

The spelling of 79828749 in words is "seventy-nine million, eight hundred twenty-eight thousand, seven hundred forty-nine".