2560399 has 2 divisors, whose sum is σ = 2560400. Its totient is φ = 2560398.

The previous prime is 2560379. The next prime is 2560417. The reversal of 2560399 is 9930652.

It is a happy number.

2560399 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 not a de Polignac number, because 2560399 - 2⁵ = 2560367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2560339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280199 + 1280200.

It is an arithmetic number, because the mean of its divisors is an integer number (1280200).

2^2560399 is an apocalyptic number.

2560399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2560399 is an equidigital number, since it uses as much as digits as its factorization.

2560399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 2560399 is about 1600.1246826419. The cubic root of 2560399 is about 136.8051824525.

The spelling of 2560399 in words is "two million, five hundred sixty thousand, three hundred ninety-nine".