39673508489 has 2 divisors, whose sum is σ = 39673508490. Its totient is φ = 39673508488.

The previous prime is 39673508431. The next prime is 39673508491. The reversal of 39673508489 is 98480537693.

39673508489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38927290000 + 746218489 = 197300^2 + 27317^2 .

It is a cyclic number.

It is not a de Polignac number, because 39673508489 - 2⁸ = 39673508233 is a prime.

Together with 39673508491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39673508419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19836754244 + 19836754245.

It is an arithmetic number, because the mean of its divisors is an integer number (19836754245).

Almost surely, 2^39673508489 is an apocalyptic number.

It is an amenable number.

39673508489 is a deficient number, since it is larger than the sum of its proper divisors (1).

39673508489 is an equidigital number, since it uses as much as digits as its factorization.

39673508489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 39673508489 in words is "thirty-nine billion, six hundred seventy-three million, five hundred eight thousand, four hundred eighty-nine".