79438143 has 4 divisors (see below), whose sum is σ = 105917528. Its totient is φ = 52958760.

The previous prime is 79438141. The next prime is 79438169. The reversal of 79438143 is 34183497.

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

It is not a de Polignac number, because 79438143 - 2¹ = 79438141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79438141) 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, 13239688 + ... + 13239693.

It is an arithmetic number, because the mean of its divisors is an integer number (26479382).

Almost surely, 2^79438143 is an apocalyptic number.

79438143 is a deficient number, since it is larger than the sum of its proper divisors (26479385).

79438143 is a wasteful number, since it uses less digits than its factorization.

79438143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26479384.

The product of its digits is 72576, while the sum is 39.

The square root of 79438143 is about 8912.8078067464. The cubic root of 79438143 is about 429.8758303814.

The spelling of 79438143 in words is "seventy-nine million, four hundred thirty-eight thousand, one hundred forty-three".