79443839 has 8 divisors (see below), whose sum is σ = 84473280. Its totient is φ = 74454016.

The previous prime is 79443829. The next prime is 79443841. The reversal of 79443839 is 93834497.

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

It is not a de Polignac number, because 79443839 - 2¹⁶ = 79378303 is a prime.

It is a super-2 number, since 2×79443839² = 12622647110115842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79443793 and 79443802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79443829) 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, 5714 + ... + 13839.

It is an arithmetic number, because the mean of its divisors is an integer number (10559160).

Almost surely, 2^79443839 is an apocalyptic number.

79443839 is a deficient number, since it is larger than the sum of its proper divisors (5029441).

79443839 is a wasteful number, since it uses less digits than its factorization.

79443839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19809.

The product of its digits is 653184, while the sum is 47.

The square root of 79443839 is about 8913.1273411749. The cubic root of 79443839 is about 429.8861046826.

The spelling of 79443839 in words is "seventy-nine million, four hundred forty-three thousand, eight hundred thirty-nine".