39786387964 has 6 divisors (see below), whose sum is σ = 69626178944. Its totient is φ = 19893193980.

The previous prime is 39786387943. The next prime is 39786387989. The reversal of 39786387964 is 46978368793.

39786387964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 39786387893 and 39786387902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973298492 + ... + 4973298499.

Almost surely, 2^39786387964 is an apocalyptic number.

It is an amenable number.

39786387964 is a deficient number, since it is larger than the sum of its proper divisors (29839790980).

39786387964 is a wasteful number, since it uses less digits than its factorization.

39786387964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9946596995 (or 9946596993 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 70.

The spelling of 39786387964 in words is "thirty-nine billion, seven hundred eighty-six million, three hundred eighty-seven thousand, nine hundred sixty-four".