3956964380944 has 15 divisors (see below), whose sum is σ = 7666633904503. Its totient is φ = 1978478212048.

The previous prime is 3956964380921. The next prime is 3956964380969. The reversal of 3956964380944 is 4490834696593.

The square root of 3956964380944 is 1989212.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×3956964380944² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 7708197 + ... + 8205499.

Almost surely, 2^{3956964380944} is an apocalyptic number.

3956964380944 is the 1989212-nd square number.

It is an amenable number.

3956964380944 is a deficient number, since it is larger than the sum of its proper divisors (3709669523559).

3956964380944 is an frugal number, since it uses more digits than its factorization.

3956964380944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994614 (or 497305 counting only the distinct ones).

The product of its (nonzero) digits is 604661760, while the sum is 70.

The spelling of 3956964380944 in words is "three trillion, nine hundred fifty-six billion, nine hundred sixty-four million, three hundred eighty thousand, nine hundred forty-four".