3967381 has 8 divisors (see below), whose sum is σ = 4372128. Its totient is φ = 3570000.

The previous prime is 3967373. The next prime is 3967417. The reversal of 3967381 is 1837693.

3967381 is nontrivially palindromic in base 12.

3967381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3967381 - 2³ = 3967373 is a prime.

It is a super-2 number, since 2×3967381² = 31480223998322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁸ + 9⁴ + 6⁸ + 7³ + 3¹¹ + 8⁷ + 1 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3967381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675 + ... + 2896.

It is an arithmetic number, because the mean of its divisors is an integer number (546516).

Almost surely, 2^3967381 is an apocalyptic number.

It is an amenable number.

3967381 is a deficient number, since it is larger than the sum of its proper divisors (404747).

3967381 is a wasteful number, since it uses less digits than its factorization.

3967381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683.

The product of its digits is 27216, while the sum is 37.

The square root of 3967381 is about 1991.8285568793. The cubic root of 3967381 is about 158.3074316510.

It can be divided in two parts, 396 and 7381, that added together give a palindrome (7777).

The spelling of 3967381 in words is "three million, nine hundred sixty-seven thousand, three hundred eighty-one".