79443943 has 2 divisors, whose sum is σ = 79443944. Its totient is φ = 79443942.

The previous prime is 79443893. The next prime is 79443953. The reversal of 79443943 is 34934497.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79443943 - 2²¹ = 77346791 is a prime.

It is a super-2 number, since 2×79443943² = 12622680158774498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79443943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79443953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39721971 + 39721972.

It is an arithmetic number, because the mean of its divisors is an integer number (39721972).

Almost surely, 2^79443943 is an apocalyptic number.

79443943 is a deficient number, since it is larger than the sum of its proper divisors (1).

79443943 is an equidigital number, since it uses as much as digits as its factorization.

79443943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 43.

The square root of 79443943 is about 8913.1331752645. The cubic root of 79443943 is about 429.8862922706.

The spelling of 79443943 in words is "seventy-nine million, four hundred forty-three thousand, nine hundred forty-three".