79478719 has 4 divisors (see below), whose sum is σ = 79501840. Its totient is φ = 79455600.

The previous prime is 79478713. The next prime is 79478743. The reversal of 79478719 is 91787497.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79478719 - 2⁵ = 79478687 is a prime.

It is a super-2 number, since 2×79478719² = 12633733547761922, which contains 22 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 (79478713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5259 + ... + 13660.

It is an arithmetic number, because the mean of its divisors is an integer number (19875460).

Almost surely, 2^79478719 is an apocalyptic number.

79478719 is a deficient number, since it is larger than the sum of its proper divisors (23121).

79478719 is a wasteful number, since it uses less digits than its factorization.

79478719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23120.

The product of its digits is 889056, while the sum is 52.

The square root of 79478719 is about 8915.0837909691. The cubic root of 79478719 is about 429.9490096378.

The spelling of 79478719 in words is "seventy-nine million, four hundred seventy-eight thousand, seven hundred nineteen".