3969999693 has 48 divisors (see below), whose sum is σ = 6441507072. Its totient is φ = 2334960000.

The previous prime is 3969999679. The next prime is 3969999697.

3969999693 is a `hidden beast` number, since 396 + 99 + 99 + 69 + 3 = 666.

3969999693 is nontrivially palindromic in base 10.

3969999693 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3969999693 - 2⁶ = 3969999629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969999697) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1687468 + ... + 1689818.

It is an arithmetic number, because the mean of its divisors is an integer number (134198064).

Almost surely, 2^3969999693 is an apocalyptic number.

3969999693 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3969999693 is a deficient number, since it is larger than the sum of its proper divisors (2471507379).

3969999693 is a wasteful number, since it uses less digits than its factorization.

3969999693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866 (or 2863 counting only the distinct ones).

The product of its digits is 172186884, while the sum is 72.

The square root of 3969999693 is about 63007.9335718924. The cubic root of 3969999693 is about 1583.4225457200.

The spelling of 3969999693 in words is "three billion, nine hundred sixty-nine million, nine hundred ninety-nine thousand, six hundred ninety-three".