79399 has 2 divisors, whose sum is σ = 79400. Its totient is φ = 79398.

The previous prime is 79397. The next prime is 79411. The reversal of 79399 is 99397.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99397) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79399 - 2¹ = 79397 is a prime.

Together with 79397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39699 + 39700.

It is an arithmetic number, because the mean of its divisors is an integer number (39700).

2⁷⁹³⁹⁹ is an apocalyptic number.

79399 is a deficient number, since it is larger than the sum of its proper divisors (1).

79399 is an equidigital number, since it uses as much as digits as its factorization.

79399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15309, while the sum is 37.

The square root of 79399 is about 281.7782816329. The cubic root of 79399 is about 42.9805211937.

The spelling of 79399 in words is "seventy-nine thousand, three hundred ninety-nine".