39976707689 has 2 divisors, whose sum is σ = 39976707690. Its totient is φ = 39976707688.

The previous prime is 39976707653. The next prime is 39976707713. The reversal of 39976707689 is 98670767993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35519810089 + 4456897600 = 188467^2 + 66760^2 .

It is a cyclic number.

It is not a de Polignac number, because 39976707689 - 2¹² = 39976703593 is a prime.

It is not a weakly prime, because it can be changed into another prime (39976707649) 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, 19988353844 + 19988353845.

It is an arithmetic number, because the mean of its divisors is an integer number (19988353845).

Almost surely, 2^39976707689 is an apocalyptic number.

It is an amenable number.

39976707689 is a deficient number, since it is larger than the sum of its proper divisors (1).

39976707689 is an equidigital number, since it uses as much as digits as its factorization.

39976707689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216040608, while the sum is 71.

The spelling of 39976707689 in words is "thirty-nine billion, nine hundred seventy-six million, seven hundred seven thousand, six hundred eighty-nine".