3966251 has 4 divisors (see below), whose sum is σ = 3971904. Its totient is φ = 3960600.

The previous prime is 3966247. The next prime is 3966271. The reversal of 3966251 is 1526693.

It is a happy number.

3966251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3966251 - 2² = 3966247 is a prime.

It is a super-2 number, since 2×3966251² = 31462293990002, 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1595 + ... + 3236.

It is an arithmetic number, because the mean of its divisors is an integer number (992976).

Almost surely, 2^3966251 is an apocalyptic number.

3966251 is a deficient number, since it is larger than the sum of its proper divisors (5653).

3966251 is an equidigital number, since it uses as much as digits as its factorization.

3966251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652.

The product of its digits is 9720, while the sum is 32.

The square root of 3966251 is about 1991.5448777268. The cubic root of 3966251 is about 158.2924003760.

The spelling of 3966251 in words is "three million, nine hundred sixty-six thousand, two hundred fifty-one".