79925847 has 8 divisors (see below), whose sum is σ = 106614144. Its totient is φ = 53260728.

The previous prime is 79925831. The next prime is 79925849. The reversal of 79925847 is 74852997.

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

It is not a de Polignac number, because 79925847 - 2⁴ = 79925831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79925847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79925849) 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, 5278 + ... + 13700.

It is an arithmetic number, because the mean of its divisors is an integer number (13326768).

Almost surely, 2^79925847 is an apocalyptic number.

79925847 is a deficient number, since it is larger than the sum of its proper divisors (26688297).

79925847 is a wasteful number, since it uses less digits than its factorization.

79925847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11589.

The product of its digits is 1270080, while the sum is 51.

The square root of 79925847 is about 8940.1256702577. The cubic root of 79925847 is about 430.7537653551.

The spelling of 79925847 in words is "seventy-nine million, nine hundred twenty-five thousand, eight hundred forty-seven".