39899195057 has 2 divisors, whose sum is σ = 39899195058. Its totient is φ = 39899195056.

The previous prime is 39899195047. The next prime is 39899195093. The reversal of 39899195057 is 75059199893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35334976576 + 4564218481 = 187976^2 + 67559^2 .

It is a cyclic number.

It is not a de Polignac number, because 39899195057 - 2¹⁶ = 39899129521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39899194984 and 39899195002.

It is not a weakly prime, because it can be changed into another prime (39899195047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19949597528 + 19949597529.

It is an arithmetic number, because the mean of its divisors is an integer number (19949597529).

Almost surely, 2^39899195057 is an apocalyptic number.

It is an amenable number.

39899195057 is a deficient number, since it is larger than the sum of its proper divisors (1).

39899195057 is an equidigital number, since it uses as much as digits as its factorization.

39899195057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27556200, while the sum is 65.

The spelling of 39899195057 in words is "thirty-nine billion, eight hundred ninety-nine million, one hundred ninety-five thousand, fifty-seven".