3813889 has 4 divisors (see below), whose sum is σ = 4014640. Its totient is φ = 3613140.

The previous prime is 3813871. The next prime is 3813893. The reversal of 3813889 is 9883183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3813889 - 2¹⁵ = 3781121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3813869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100347 + ... + 100384.

It is an arithmetic number, because the mean of its divisors is an integer number (1003660).

Almost surely, 2^3813889 is an apocalyptic number.

It is an amenable number.

3813889 is a deficient number, since it is larger than the sum of its proper divisors (200751).

3813889 is a wasteful number, since it uses less digits than its factorization.

3813889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200750.

The product of its digits is 41472, while the sum is 40.

The square root of 3813889 is about 1952.9180730384. The cubic root of 3813889 is about 156.2389637005.

The spelling of 3813889 in words is "three million, eight hundred thirteen thousand, eight hundred eighty-nine".