79172105 has 8 divisors (see below), whose sum is σ = 95071752. Its totient is φ = 63294208.

The previous prime is 79172099. The next prime is 79172129. The reversal of 79172105 is 50127197.

It can be written as a sum of positive squares in 4 ways, for example, as 175561 + 78996544 = 419^2 + 8888^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 79172105 - 2⁸ = 79171849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4097 + ... + 13233.

It is an arithmetic number, because the mean of its divisors is an integer number (11883969).

Almost surely, 2^79172105 is an apocalyptic number.

It is an amenable number.

79172105 is a deficient number, since it is larger than the sum of its proper divisors (15899647).

79172105 is a wasteful number, since it uses less digits than its factorization.

79172105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10875.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 79172105 is about 8897.8708127282. The cubic root of 79172105 is about 429.3954095688.

The spelling of 79172105 in words is "seventy-nine million, one hundred seventy-two thousand, one hundred five".