39674447693 has 2 divisors, whose sum is σ = 39674447694. Its totient is φ = 39674447692.

The previous prime is 39674447669. The next prime is 39674447699.

39674447693 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24235639684 + 15438808009 = 155678^2 + 124253^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 39674447693 - 2¹⁸ = 39674185549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39674447699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19837223846 + 19837223847.

It is an arithmetic number, because the mean of its divisors is an integer number (19837223847).

Almost surely, 2^39674447693 is an apocalyptic number.

It is an amenable number.

39674447693 is a deficient number, since it is larger than the sum of its proper divisors (1).

39674447693 is an equidigital number, since it uses as much as digits as its factorization.

39674447693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82301184, while the sum is 62.

The spelling of 39674447693 in words is "thirty-nine billion, six hundred seventy-four million, four hundred forty-seven thousand, six hundred ninety-three".