3956779966 has 8 divisors (see below), whose sum is σ = 5935470840. Its totient is φ = 1978289688.

The previous prime is 3956779951. The next prime is 3956779969. The reversal of 3956779966 is 6699776593.

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

It is a super-2 number, since 2×3956779966² = 31312215398677922312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3956779969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17320 + ... + 90628.

It is an arithmetic number, because the mean of its divisors is an integer number (741933855).

Almost surely, 2^3956779966 is an apocalyptic number.

3956779966 is a deficient number, since it is larger than the sum of its proper divisors (1978690874).

3956779966 is a wasteful number, since it uses less digits than its factorization.

3956779966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100298.

The product of its digits is 115736040, while the sum is 67.

The square root of 3956779966 is about 62902.9408374521. The cubic root of 3956779966 is about 1581.6630417062.

The spelling of 3956779966 in words is "three billion, nine hundred fifty-six million, seven hundred seventy-nine thousand, nine hundred sixty-six".