3944357667 has 16 divisors (see below), whose sum is σ = 5847497760. Its totient is φ = 2627769600.

The previous prime is 3944357647. The next prime is 3944357671. The reversal of 3944357667 is 7667534493.

It is a happy number.

3944357667 is a `hidden beast` number, since 3 + 9 + 4 + 4 + 3 + 576 + 67 = 666.

It is not a de Polignac number, because 3944357667 - 2⁸ = 3944357411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3944357647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9334 + ... + 89307.

It is an arithmetic number, because the mean of its divisors is an integer number (365468610).

Almost surely, 2^3944357667 is an apocalyptic number.

3944357667 is a deficient number, since it is larger than the sum of its proper divisors (1903140093).

3944357667 is a wasteful number, since it uses less digits than its factorization.

3944357667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100131 (or 100125 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 54.

The square root of 3944357667 is about 62804.1214173083. The cubic root of 3944357667 is about 1580.0060976905.

The spelling of 3944357667 in words is "three billion, nine hundred forty-four million, three hundred fifty-seven thousand, six hundred sixty-seven".