39899055193 has 2 divisors, whose sum is σ = 39899055194. Its totient is φ = 39899055192.

The previous prime is 39899055151. The next prime is 39899055281. The reversal of 39899055193 is 39155099893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39699765504 + 199289689 = 199248^2 + 14117^2 .

It is a cyclic number.

It is not a de Polignac number, because 39899055193 - 2⁹ = 39899054681 is a prime.

It is not a weakly prime, because it can be changed into another prime (39899055293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19949527596 + 19949527597.

It is an arithmetic number, because the mean of its divisors is an integer number (19949527597).

Almost surely, 2^39899055193 is an apocalyptic number.

It is an amenable number.

39899055193 is a deficient number, since it is larger than the sum of its proper divisors (1).

39899055193 is an equidigital number, since it uses as much as digits as its factorization.

39899055193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11809800, while the sum is 61.

The spelling of 39899055193 in words is "thirty-nine billion, eight hundred ninety-nine million, fifty-five thousand, one hundred ninety-three".