79884899 has 2 divisors, whose sum is σ = 79884900. Its totient is φ = 79884898.

The previous prime is 79884881. The next prime is 79884907. The reversal of 79884899 is 99848897.

It is a strong prime.

It is an emirp because it is prime and its reverse (99848897) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79884899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79884859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39942449 + 39942450.

It is an arithmetic number, because the mean of its divisors is an integer number (39942450).

Almost surely, 2^79884899 is an apocalyptic number.

79884899 is a deficient number, since it is larger than the sum of its proper divisors (1).

79884899 is an equidigital number, since it uses as much as digits as its factorization.

79884899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 62.

The square root of 79884899 is about 8937.8352524535. The cubic root of 79884899 is about 430.6801908319.

The spelling of 79884899 in words is "seventy-nine million, eight hundred eighty-four thousand, eight hundred ninety-nine".