3964887 has 6 divisors (see below), whose sum is σ = 5727072. Its totient is φ = 2643252.

The previous prime is 3964879. The next prime is 3964889. The reversal of 3964887 is 7884693.

It is a happy number.

It is not a de Polignac number, because 3964887 - 2³ = 3964879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964889) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 220263 + ... + 220280.

It is an arithmetic number, because the mean of its divisors is an integer number (954512).

Almost surely, 2^3964887 is an apocalyptic number.

3964887 is a deficient number, since it is larger than the sum of its proper divisors (1762185).

3964887 is a wasteful number, since it uses less digits than its factorization.

3964887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440549 (or 440546 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 3964887 is about 1991.2024005610. The cubic root of 3964887 is about 158.2742526264.

It can be divided in two parts, 396488 and 7, that added together give a triangular number (396495 = T₈₉₀).

The spelling of 3964887 in words is "three million, nine hundred sixty-four thousand, eight hundred eighty-seven".