993959399 has 2 divisors, whose sum is σ = 993959400. Its totient is φ = 993959398.

The previous prime is 993959389. The next prime is 993959401.

993959399 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 993959399 - 2⁸ = 993959143 is a prime.

Together with 993959401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993959389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496979699 + 496979700.

It is an arithmetic number, because the mean of its divisors is an integer number (496979700).

Almost surely, 2^993959399 is an apocalyptic number.

993959399 is a deficient number, since it is larger than the sum of its proper divisors (1).

993959399 is an equidigital number, since it uses as much as digits as its factorization.

993959399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23914845, while the sum is 65.

The square root of 993959399 is about 31527.1216415327. The cubic root of 993959399 is about 997.9823983546.

The spelling of 993959399 in words is "nine hundred ninety-three million, nine hundred fifty-nine thousand, three hundred ninety-nine".