79553743 has 2 divisors, whose sum is σ = 79553744. Its totient is φ = 79553742.

The previous prime is 79553729. The next prime is 79553777. The reversal of 79553743 is 34735597.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79553743 - 2²¹ = 77456591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79553743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79553783) 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, 39776871 + 39776872.

It is an arithmetic number, because the mean of its divisors is an integer number (39776872).

Almost surely, 2^79553743 is an apocalyptic number.

79553743 is a deficient number, since it is larger than the sum of its proper divisors (1).

79553743 is an equidigital number, since it uses as much as digits as its factorization.

79553743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 396900, while the sum is 43.

The square root of 79553743 is about 8919.2904986888. The cubic root of 79553743 is about 430.0842506630.

The spelling of 79553743 in words is "seventy-nine million, five hundred fifty-three thousand, seven hundred forty-three".