3813887 has 8 divisors (see below), whose sum is σ = 4755072. Its totient is φ = 2971800.

The previous prime is 3813871. The next prime is 3813893. The reversal of 3813887 is 7883183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3813887 - 2⁴ = 3813871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3813887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3813847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24689 + ... + 24842.

It is an arithmetic number, because the mean of its divisors is an integer number (594384).

Almost surely, 2^3813887 is an apocalyptic number.

3813887 is a deficient number, since it is larger than the sum of its proper divisors (941185).

3813887 is a wasteful number, since it uses less digits than its factorization.

3813887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49549.

The product of its digits is 32256, while the sum is 38.

The square root of 3813887 is about 1952.9175609841. The cubic root of 3813887 is about 156.2389363900.

The spelling of 3813887 in words is "three million, eight hundred thirteen thousand, eight hundred eighty-seven".