79945379 has 2 divisors, whose sum is σ = 79945380. Its totient is φ = 79945378.

The previous prime is 79945337. The next prime is 79945381. The reversal of 79945379 is 97354997.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (97354997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79945379 - 2¹⁶ = 79879843 is a prime.

Together with 79945381, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79945379.

It is not a weakly prime, because it can be changed into another prime (79915379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39972689 + 39972690.

It is an arithmetic number, because the mean of its divisors is an integer number (39972690).

Almost surely, 2^79945379 is an apocalyptic number.

79945379 is a deficient number, since it is larger than the sum of its proper divisors (1).

79945379 is an equidigital number, since it uses as much as digits as its factorization.

79945379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2143260, while the sum is 53.

The square root of 79945379 is about 8941.2179819083. The cubic root of 79945379 is about 430.7888511987.

The spelling of 79945379 in words is "seventy-nine million, nine hundred forty-five thousand, three hundred seventy-nine".