79688047 has 8 divisors (see below), whose sum is σ = 82596800. Its totient is φ = 76819104.

The previous prime is 79688039. The next prime is 79688053. The reversal of 79688047 is 74088697.

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

It is not a de Polignac number, because 79688047 - 2³ = 79688039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79688017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5847 + ... + 13912.

It is an arithmetic number, because the mean of its divisors is an integer number (10324600).

Almost surely, 2^79688047 is an apocalyptic number.

79688047 is a deficient number, since it is larger than the sum of its proper divisors (2908753).

79688047 is a wasteful number, since it uses less digits than its factorization.

79688047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19905.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 79688047 is about 8926.8161737542. The cubic root of 79688047 is about 430.3261398083.

The spelling of 79688047 in words is "seventy-nine million, six hundred eighty-eight thousand, forty-seven".