993799999 has 2 divisors, whose sum is σ = 993800000. Its totient is φ = 993799998.

The previous prime is 993799967. The next prime is 993800009. The reversal of 993799999 is 999997399.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 993799999 - 2⁵ = 993799967 is a prime.

993799999 is a modest number, since divided by 99999 gives 9937 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993799949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496899999 + 496900000.

It is an arithmetic number, because the mean of its divisors is an integer number (496900000).

Almost surely, 2^993799999 is an apocalyptic number.

993799999 is a deficient number, since it is larger than the sum of its proper divisors (1).

993799999 is an equidigital number, since it uses as much as digits as its factorization.

993799999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100442349, while the sum is 73.

The square root of 993799999 is about 31524.5935580461. The cubic root of 993799999 is about 997.9290471148.

The spelling of 993799999 in words is "nine hundred ninety-three million, seven hundred ninety-nine thousand, nine hundred ninety-nine".