39904745113 has 2 divisors, whose sum is σ = 39904745114. Its totient is φ = 39904745112.

The previous prime is 39904745093. The next prime is 39904745129. The reversal of 39904745113 is 31154740993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33831348489 + 6073396624 = 183933^2 + 77932^2 .

It is a cyclic number.

It is not a de Polignac number, because 39904745113 - 2¹⁷ = 39904614041 is a prime.

It is not a weakly prime, because it can be changed into another prime (39904745173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19952372556 + 19952372557.

It is an arithmetic number, because the mean of its divisors is an integer number (19952372557).

Almost surely, 2^39904745113 is an apocalyptic number.

It is an amenable number.

39904745113 is a deficient number, since it is larger than the sum of its proper divisors (1).

39904745113 is an equidigital number, since it uses as much as digits as its factorization.

39904745113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 39904745113 in words is "thirty-nine billion, nine hundred four million, seven hundred forty-five thousand, one hundred thirteen".