39544243199 has 2 divisors, whose sum is σ = 39544243200. Its totient is φ = 39544243198.

The previous prime is 39544243187. The next prime is 39544243213. The reversal of 39544243199 is 99134244593.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39544243199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39544243199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39544243129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19772121599 + 19772121600.

It is an arithmetic number, because the mean of its divisors is an integer number (19772121600).

Almost surely, 2^39544243199 is an apocalyptic number.

39544243199 is a deficient number, since it is larger than the sum of its proper divisors (1).

39544243199 is an equidigital number, since it uses as much as digits as its factorization.

39544243199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 53.

The spelling of 39544243199 in words is "thirty-nine billion, five hundred forty-four million, two hundred forty-three thousand, one hundred ninety-nine".