39044969617 has 2 divisors, whose sum is σ = 39044969618. Its totient is φ = 39044969616.

The previous prime is 39044969573. The next prime is 39044969651. The reversal of 39044969617 is 71696944093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28763820801 + 10281148816 = 169599^2 + 101396^2 .

It is a cyclic number.

It is not a de Polignac number, because 39044969617 - 2¹¹ = 39044967569 is a prime.

It is not a weakly prime, because it can be changed into another prime (39044969417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19522484808 + 19522484809.

It is an arithmetic number, because the mean of its divisors is an integer number (19522484809).

Almost surely, 2^39044969617 is an apocalyptic number.

It is an amenable number.

39044969617 is a deficient number, since it is larger than the sum of its proper divisors (1).

39044969617 is an equidigital number, since it uses as much as digits as its factorization.

39044969617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 39044969617 in words is "thirty-nine billion, forty-four million, nine hundred sixty-nine thousand, six hundred seventeen".