2646104399 has 2 divisors, whose sum is σ = 2646104400. Its totient is φ = 2646104398.

The previous prime is 2646104339. The next prime is 2646104423. The reversal of 2646104399 is 9934016462.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2646104399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2646104339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323052199 + 1323052200.

It is an arithmetic number, because the mean of its divisors is an integer number (1323052200).

Almost surely, 2^2646104399 is an apocalyptic number.

2646104399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2646104399 is an equidigital number, since it uses as much as digits as its factorization.

2646104399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 2646104399 is about 51440.2993673248. The cubic root of 2646104399 is about 1383.1490780411.

The spelling of 2646104399 in words is "two billion, six hundred forty-six million, one hundred four thousand, three hundred ninety-nine".