3955906 has 4 divisors (see below), whose sum is σ = 5933862. Its totient is φ = 1977952.

The previous prime is 3955877. The next prime is 3955909. The reversal of 3955906 is 6095593.

3955906 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., 3207681 + 748225 = 1791^2 + 865^2 .

It is not an unprimeable number, because it can be changed into a prime (3955909) 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 as a sum of consecutive naturals, namely, 988975 + ... + 988978.

Almost surely, 2^3955906 is an apocalyptic number.

3955906 is a deficient number, since it is larger than the sum of its proper divisors (1977956).

3955906 is a wasteful number, since it uses less digits than its factorization.

3955906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977955.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 3955906 is about 1988.9459520057. The cubic root of 3955906 is about 158.1546581561.

It can be divided in two parts, 39 and 55906, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 3955906 in words is "three million, nine hundred fifty-five thousand, nine hundred six".