3966281 has 16 divisors (see below), whose sum is σ = 4606848. Its totient is φ = 3379200.

The previous prime is 3966271. The next prime is 3966293. The reversal of 3966281 is 1826693.

It is not a de Polignac number, because 3966281 - 2¹⁸ = 3704137 is a prime.

It is a super-2 number, since 2×3966281² = 31462769941922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3966211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15305 + ... + 15561.

It is an arithmetic number, because the mean of its divisors is an integer number (287928).

Almost surely, 2^3966281 is an apocalyptic number.

It is an amenable number.

3966281 is a deficient number, since it is larger than the sum of its proper divisors (640567).

3966281 is a wasteful number, since it uses less digits than its factorization.

3966281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352.

The product of its digits is 15552, while the sum is 35.

The square root of 3966281 is about 1991.5524095539. The cubic root of 3966281 is about 158.2927994733.

The spelling of 3966281 in words is "three million, nine hundred sixty-six thousand, two hundred eighty-one".