79223899 has 2 divisors, whose sum is σ = 79223900. Its totient is φ = 79223898.

The previous prime is 79223897. The next prime is 79223909. The reversal of 79223899 is 99832297.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79223899 - 2¹ = 79223897 is a prime.

Together with 79223897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79223897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39611949 + 39611950.

It is an arithmetic number, because the mean of its divisors is an integer number (39611950).

Almost surely, 2^79223899 is an apocalyptic number.

79223899 is a deficient number, since it is larger than the sum of its proper divisors (1).

79223899 is an equidigital number, since it uses as much as digits as its factorization.

79223899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 79223899 is about 8900.7808084460. The cubic root of 79223899 is about 429.4890252761.

The spelling of 79223899 in words is "seventy-nine million, two hundred twenty-three thousand, eight hundred ninety-nine".