3969889693 has 24 divisors (see below), whose sum is σ = 5041599840. Its totient is φ = 3091122720.

The previous prime is 3969889681. The next prime is 3969889717.

3969889693 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-3969889693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969889633) 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, 1286130 + ... + 1289212.

It is an arithmetic number, because the mean of its divisors is an integer number (210066660).

Almost surely, 2^3969889693 is an apocalyptic number.

It is an amenable number.

3969889693 is a deficient number, since it is larger than the sum of its proper divisors (1071710147).

3969889693 is a wasteful number, since it uses less digits than its factorization.

3969889693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497 (or 5490 counting only the distinct ones).

The product of its digits is 136048896, while the sum is 70.

The square root of 3969889693 is about 63007.0606598975. The cubic root of 3969889693 is about 1583.4079211942.

The spelling of 3969889693 in words is "three billion, nine hundred sixty-nine million, eight hundred eighty-nine thousand, six hundred ninety-three".