79880847 has 8 divisors (see below), whose sum is σ = 107124144. Its totient is φ = 52945728.

The previous prime is 79880839. The next prime is 79880861. The reversal of 79880847 is 74808897.

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

It is not a de Polignac number, because 79880847 - 2³ = 79880839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79880847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79880897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76438 + ... + 77475.

It is an arithmetic number, because the mean of its divisors is an integer number (13390518).

Almost surely, 2^79880847 is an apocalyptic number.

79880847 is a deficient number, since it is larger than the sum of its proper divisors (27243297).

79880847 is a wasteful number, since it uses less digits than its factorization.

79880847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154089.

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 79880847 is about 8937.6085727671. The cubic root of 79880847 is about 430.6729089148.

The spelling of 79880847 in words is "seventy-nine million, eight hundred eighty thousand, eight hundred forty-seven".