968720399 has 2 divisors, whose sum is σ = 968720400. Its totient is φ = 968720398.

The previous prime is 968720381. The next prime is 968720413. The reversal of 968720399 is 993027869.

968720399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-968720399 is a prime.

It is a super-2 number, since 2×968720399² = 1876838422877438402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 968720399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (968720309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484360199 + 484360200.

It is an arithmetic number, because the mean of its divisors is an integer number (484360200).

Almost surely, 2^968720399 is an apocalyptic number.

968720399 is a deficient number, since it is larger than the sum of its proper divisors (1).

968720399 is an equidigital number, since it uses as much as digits as its factorization.

968720399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 968720399 is about 31124.2734694322. The cubic root of 968720399 is about 989.4628242487.

The spelling of 968720399 in words is "nine hundred sixty-eight million, seven hundred twenty thousand, three hundred ninety-nine".