79391471 has 8 divisors (see below), whose sum is σ = 80552160. Its totient is φ = 78236928.

The previous prime is 79391461. The next prime is 79391483. The reversal of 79391471 is 17419397.

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 79391471 - 2¹⁰ = 79390447 is a prime.

It is a super-3 number, since 3×79391471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79391441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28670 + ... + 31316.

It is an arithmetic number, because the mean of its divisors is an integer number (10069020).

Almost surely, 2^79391471 is an apocalyptic number.

79391471 is a deficient number, since it is larger than the sum of its proper divisors (1160689).

79391471 is a wasteful number, since it uses less digits than its factorization.

79391471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073.

The product of its digits is 47628, while the sum is 41.

The square root of 79391471 is about 8910.1891674644. The cubic root of 79391471 is about 429.7916261000.

The spelling of 79391471 in words is "seventy-nine million, three hundred ninety-one thousand, four hundred seventy-one".