8402399 has 2 divisors, whose sum is σ = 8402400. Its totient is φ = 8402398.

The previous prime is 8402371. The next prime is 8402413. The reversal of 8402399 is 9932048.

8402399 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-8402399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8402309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4201199 + 4201200.

It is an arithmetic number, because the mean of its divisors is an integer number (4201200).

Almost surely, 2^8402399 is an apocalyptic number.

8402399 is a deficient number, since it is larger than the sum of its proper divisors (1).

8402399 is an equidigital number, since it uses as much as digits as its factorization.

8402399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 8402399 is about 2898.6891865117. The cubic root of 8402399 is about 203.2986213850.

The spelling of 8402399 in words is "eight million, four hundred two thousand, three hundred ninety-nine".