39970988689 has 2 divisors, whose sum is σ = 39970988690. Its totient is φ = 39970988688.

The previous prime is 39970988677. The next prime is 39970988767. The reversal of 39970988689 is 98688907993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39591050625 + 379938064 = 198975^2 + 19492^2 .

It is a cyclic number.

It is not a de Polignac number, because 39970988689 - 2⁵ = 39970988657 is a prime.

It is not a weakly prime, because it can be changed into another prime (39970988089) 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, 19985494344 + 19985494345.

It is an arithmetic number, because the mean of its divisors is an integer number (19985494345).

Almost surely, 2^39970988689 is an apocalyptic number.

It is an amenable number.

39970988689 is a deficient number, since it is larger than the sum of its proper divisors (1).

39970988689 is an equidigital number, since it uses as much as digits as its factorization.

39970988689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423263232, while the sum is 76.

The spelling of 39970988689 in words is "thirty-nine billion, nine hundred seventy million, nine hundred eighty-eight thousand, six hundred eighty-nine".