39728346841 has 2 divisors, whose sum is σ = 39728346842. Its totient is φ = 39728346840.

The previous prime is 39728346787. The next prime is 39728346859. The reversal of 39728346841 is 14864382793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38643303241 + 1085043600 = 196579^2 + 32940^2 .

It is a cyclic number.

It is not a de Polignac number, because 39728346841 - 2¹¹ = 39728344793 is a prime.

It is not a weakly prime, because it can be changed into another prime (39728346871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19864173420 + 19864173421.

It is an arithmetic number, because the mean of its divisors is an integer number (19864173421).

Almost surely, 2^39728346841 is an apocalyptic number.

It is an amenable number.

39728346841 is a deficient number, since it is larger than the sum of its proper divisors (1).

39728346841 is an equidigital number, since it uses as much as digits as its factorization.

39728346841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 55.

The spelling of 39728346841 in words is "thirty-nine billion, seven hundred twenty-eight million, three hundred forty-six thousand, eight hundred forty-one".