993797999 has 2 divisors, whose sum is σ = 993798000. Its totient is φ = 993797998.

The previous prime is 993797971. The next prime is 993798023. The reversal of 993797999 is 999797399.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 993797999 - 2²⁸ = 725362543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993797929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496898999 + 496899000.

It is an arithmetic number, because the mean of its divisors is an integer number (496899000).

Almost surely, 2^993797999 is an apocalyptic number.

993797999 is a deficient number, since it is larger than the sum of its proper divisors (1).

993797999 is an equidigital number, since it uses as much as digits as its factorization.

993797999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78121827, while the sum is 71.

The square root of 993797999 is about 31524.5618367647. The cubic root of 993797999 is about 997.9283776778.

The spelling of 993797999 in words is "nine hundred ninety-three million, seven hundred ninety-seven thousand, nine hundred ninety-nine".