3969664479 has 12 divisors (see below), whose sum is σ = 6255229032. Its totient is φ = 2405857200.

The previous prime is 3969664469. The next prime is 3969664493. The reversal of 3969664479 is 9744669693.

It is not a de Polignac number, because 3969664479 - 2⁴ = 3969664463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969664469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20048712 + ... + 20048909.

It is an arithmetic number, because the mean of its divisors is an integer number (521269086).

Almost surely, 2^3969664479 is an apocalyptic number.

3969664479 is a deficient number, since it is larger than the sum of its proper divisors (2285564553).

3969664479 is a wasteful number, since it uses less digits than its factorization.

3969664479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40097638 (or 40097635 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 63.

The square root of 3969664479 is about 63005.2734221509. The cubic root of 3969664479 is about 1583.3779780973.

The spelling of 3969664479 in words is "three billion, nine hundred sixty-nine million, six hundred sixty-four thousand, four hundred seventy-nine".