402316399 has 2 divisors, whose sum is σ = 402316400. Its totient is φ = 402316398.

The previous prime is 402316379. The next prime is 402316417. The reversal of 402316399 is 993613204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402316399 - 2⁵ = 402316367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402316309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201158199 + 201158200.

It is an arithmetic number, because the mean of its divisors is an integer number (201158200).

Almost surely, 2^402316399 is an apocalyptic number.

402316399 is a deficient number, since it is larger than the sum of its proper divisors (1).

402316399 is an equidigital number, since it uses as much as digits as its factorization.

402316399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 402316399 is about 20057.8263777509. The cubic root of 402316399 is about 738.2258441980.

The spelling of 402316399 in words is "four hundred two million, three hundred sixteen thousand, three hundred ninety-nine".