79171491 has 8 divisors (see below), whose sum is σ = 120642304. Its totient is φ = 45240840.

The previous prime is 79171457. The next prime is 79171501. The reversal of 79171491 is 19417197.

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

It is not a de Polignac number, because 79171491 - 2¹⁷ = 79040419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79171891) 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, 1885015 + ... + 1885056.

It is an arithmetic number, because the mean of its divisors is an integer number (15080288).

Almost surely, 2^79171491 is an apocalyptic number.

79171491 is a deficient number, since it is larger than the sum of its proper divisors (41470813).

79171491 is a wasteful number, since it uses less digits than its factorization.

79171491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770081.

The product of its digits is 15876, while the sum is 39.

The square root of 79171491 is about 8897.8363100250. The cubic root of 79171491 is about 429.3942995421.

The spelling of 79171491 in words is "seventy-nine million, one hundred seventy-one thousand, four hundred ninety-one".