3969999694 has 8 divisors (see below), whose sum is σ = 5965430328. Its totient is φ = 1981522920.

The previous prime is 3969999679. The next prime is 3969999697. The reversal of 3969999694 is 4969999693.

3969999694 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 1737037 + ... + 1739320.

It is an arithmetic number, because the mean of its divisors is an integer number (745678791).

Almost surely, 2^3969999694 is an apocalyptic number.

3969999694 is a deficient number, since it is larger than the sum of its proper divisors (1995430634).

3969999694 is a wasteful number, since it uses less digits than its factorization.

3969999694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476930.

The product of its digits is 229582512, while the sum is 73.

The square root of 3969999694 is about 63007.9335798279. The cubic root of 3969999694 is about 1583.4225458529.

Subtracting 3969999694 from its reverse (4969999693), we obtain a palindrome (999999999).

The spelling of 3969999694 in words is "three billion, nine hundred sixty-nine million, nine hundred ninety-nine thousand, six hundred ninety-four".