3956818 has 16 divisors (see below), whose sum is σ = 6502680. Its totient is φ = 1797376.

The previous prime is 3956803. The next prime is 3956831. The reversal of 3956818 is 8186593.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3948169 + 8649 = 1987^2 + 93^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021 + ... + 2992.

Almost surely, 2^3956818 is an apocalyptic number.

3956818 is a deficient number, since it is larger than the sum of its proper divisors (2545862).

3956818 is a wasteful number, since it uses less digits than its factorization.

3956818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061.

The product of its digits is 51840, while the sum is 40.

The square root of 3956818 is about 1989.1752059585. The cubic root of 3956818 is about 158.1668109529.

It can be divided in two parts, 3956 and 818, that added together give a palindrome (4774).

The spelling of 3956818 in words is "three million, nine hundred fifty-six thousand, eight hundred eighteen".