79929789 has 8 divisors (see below), whose sum is σ = 112182240. Its totient is φ = 50481936.

The previous prime is 79929779. The next prime is 79929791. The reversal of 79929789 is 98792997.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79929789 - 2¹² = 79925693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79929739) 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, 701082 + ... + 701195.

It is an arithmetic number, because the mean of its divisors is an integer number (14022780).

Almost surely, 2^79929789 is an apocalyptic number.

It is an amenable number.

79929789 is a deficient number, since it is larger than the sum of its proper divisors (32252451).

79929789 is a wasteful number, since it uses less digits than its factorization.

79929789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402299.

The product of its digits is 5143824, while the sum is 60.

The square root of 79929789 is about 8940.3461342389. The cubic root of 79929789 is about 430.7608469334.

The spelling of 79929789 in words is "seventy-nine million, nine hundred twenty-nine thousand, seven hundred eighty-nine".