3956867 has 2 divisors, whose sum is σ = 3956868. Its totient is φ = 3956866.

The previous prime is 3956863. The next prime is 3956881. The reversal of 3956867 is 7686593.

It is a weak prime.

It is an emirp because it is prime and its reverse (7686593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3956867 - 2² = 3956863 is a prime.

It is not a weakly prime, because it can be changed into another prime (3956863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978433 + 1978434.

It is an arithmetic number, because the mean of its divisors is an integer number (1978434).

Almost surely, 2^3956867 is an apocalyptic number.

3956867 is a deficient number, since it is larger than the sum of its proper divisors (1).

3956867 is an equidigital number, since it uses as much as digits as its factorization.

3956867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 3956867 is about 1989.1875225830. The cubic root of 3956867 is about 158.1674638464.

The spelling of 3956867 in words is "three million, nine hundred fifty-six thousand, eight hundred sixty-seven".