79943219 has 2 divisors, whose sum is σ = 79943220. Its totient is φ = 79943218.

The previous prime is 79943183. The next prime is 79943221. The reversal of 79943219 is 91234997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79943219 - 2¹⁶ = 79877683 is a prime.

It is a super-2 number, since 2×79943219² = 12781836528163922, which contains 22 as substring.

Together with 79943221, 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 79943219.

It is not a weakly prime, because it can be changed into another prime (79943519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39971609 + 39971610.

It is an arithmetic number, because the mean of its divisors is an integer number (39971610).

Almost surely, 2^79943219 is an apocalyptic number.

79943219 is a deficient number, since it is larger than the sum of its proper divisors (1).

79943219 is an equidigital number, since it uses as much as digits as its factorization.

79943219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 79943219 is about 8941.0971921795. The cubic root of 79943219 is about 430.7849714151.

The spelling of 79943219 in words is "seventy-nine million, nine hundred forty-three thousand, two hundred nineteen".