79159439 has 2 divisors, whose sum is σ = 79159440. Its totient is φ = 79159438.

The previous prime is 79159433. The next prime is 79159441. The reversal of 79159439 is 93495197.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79159439 - 2¹² = 79155343 is a prime.

Together with 79159441, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 79159393 and 79159402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79159433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39579719 + 39579720.

It is an arithmetic number, because the mean of its divisors is an integer number (39579720).

Almost surely, 2^79159439 is an apocalyptic number.

79159439 is a deficient number, since it is larger than the sum of its proper divisors (1).

79159439 is an equidigital number, since it uses as much as digits as its factorization.

79159439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 47.

The square root of 79159439 is about 8897.1590409523. The cubic root of 79159439 is about 429.3725100374.

The spelling of 79159439 in words is "seventy-nine million, one hundred fifty-nine thousand, four hundred thirty-nine".