3964855 has 12 divisors (see below), whose sum is σ = 4977000. Its totient is φ = 3031952.

The previous prime is 3964847. The next prime is 3964867. The reversal of 3964855 is 5584693.

It is not a de Polignac number, because 3964855 - 2³ = 3964847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1896 + ... + 3394.

It is an arithmetic number, because the mean of its divisors is an integer number (414750).

Almost surely, 2^3964855 is an apocalyptic number.

3964855 is a deficient number, since it is larger than the sum of its proper divisors (1012145).

3964855 is a wasteful number, since it uses less digits than its factorization.

3964855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1527 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 3964855 is about 1991.1943651989. The cubic root of 3964855 is about 158.2738268228.

The spelling of 3964855 in words is "three million, nine hundred sixty-four thousand, eight hundred fifty-five".