3939894507069 has 24 divisors (see below), whose sum is σ = 5693754872000. Its totient is φ = 2625306178752.

The previous prime is 3939894507047. The next prime is 3939894507113. The reversal of 3939894507069 is 9607054989393.

3939894507069 is a `hidden beast` number, since 3 + 9 + 39 + 89 + 4 + 507 + 0 + 6 + 9 = 666.

3939894507069 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3939894507069 - 2²⁰ = 3939893458493 is a prime.

It is a super-2 number, since 2×3939894507069² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3939894506988 and 3939894507006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939894507019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183248682 + ... + 183270180.

Almost surely, 2^{3939894507069} is an apocalyptic number.

It is an amenable number.

3939894507069 is a deficient number, since it is larger than the sum of its proper divisors (1753860364931).

3939894507069 is a wasteful number, since it uses less digits than its factorization.

3939894507069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30561 (or 30558 counting only the distinct ones).

The product of its (nonzero) digits is 396809280, while the sum is 72.

The spelling of 3939894507069 in words is "three trillion, nine hundred thirty-nine billion, eight hundred ninety-four million, five hundred seven thousand, sixty-nine".