2602640399 has 2 divisors, whose sum is σ = 2602640400. Its totient is φ = 2602640398.

The previous prime is 2602640363. The next prime is 2602640413. The reversal of 2602640399 is 9930462062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2602640399 - 2¹² = 2602636303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2602640099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1301320199 + 1301320200.

It is an arithmetic number, because the mean of its divisors is an integer number (1301320200).

Almost surely, 2^2602640399 is an apocalyptic number.

2602640399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2602640399 is an equidigital number, since it uses as much as digits as its factorization.

2602640399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 2602640399 is about 51016.0798082330. The cubic root of 2602640399 is about 1375.5341878570.

The spelling of 2602640399 in words is "two billion, six hundred two million, six hundred forty thousand, three hundred ninety-nine".