13908609443 has 2 divisors, whose sum is σ = 13908609444. Its totient is φ = 13908609442.

The previous prime is 13908609391. The next prime is 13908609493. The reversal of 13908609443 is 34490680931.

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-13908609443 is a prime.

It is not a weakly prime, because it can be changed into another prime (13908609493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6954304721 + 6954304722.

It is an arithmetic number, because the mean of its divisors is an integer number (6954304722).

Almost surely, 2^13908609443 is an apocalyptic number.

13908609443 is a deficient number, since it is larger than the sum of its proper divisors (1).

13908609443 is an equidigital number, since it uses as much as digits as its factorization.

13908609443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 13908609443 in words is "thirteen billion, nine hundred eight million, six hundred nine thousand, four hundred forty-three".