3969331329694 has 8 divisors (see below), whose sum is σ = 5967025435728. Its totient is φ = 1980322851120.

The previous prime is 3969331329661. The next prime is 3969331329707. The reversal of 3969331329694 is 4969231339693.

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

It is a super-2 number, since 2×3969331329694² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2171405722 + ... + 2171407549.

It is an arithmetic number, because the mean of its divisors is an integer number (745878179466).

Almost surely, 2^{3969331329694} is an apocalyptic number.

3969331329694 is a deficient number, since it is larger than the sum of its proper divisors (1997694106034).

3969331329694 is a wasteful number, since it uses less digits than its factorization.

3969331329694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342813730.

The product of its digits is 153055008, while the sum is 67.

Subtracting 3969331329694 from its reverse (4969231339693), we obtain a palindrome (999900009999).

The spelling of 3969331329694 in words is "three trillion, nine hundred sixty-nine billion, three hundred thirty-one million, three hundred twenty-nine thousand, six hundred ninety-four".