3954866 has 4 divisors (see below), whose sum is σ = 5932302. Its totient is φ = 1977432.

The previous prime is 3954859. The next prime is 3954871. The reversal of 3954866 is 6684593.

3954866 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 can be written as a sum of positive squares in only one way, i.e., 3940225 + 14641 = 1985^2 + 121^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 988715 + ... + 988718.

Almost surely, 2^3954866 is an apocalyptic number.

3954866 is a deficient number, since it is larger than the sum of its proper divisors (1977436).

3954866 is a wasteful number, since it uses less digits than its factorization.

3954866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977435.

The product of its digits is 155520, while the sum is 41.

The square root of 3954866 is about 1988.6844898073. The cubic root of 3954866 is about 158.1407974239.

The spelling of 3954866 in words is "three million, nine hundred fifty-four thousand, eight hundred sixty-six".