3899919 has 16 divisors (see below), whose sum is σ = 5626368. Its totient is φ = 2393472.

The previous prime is 3899887. The next prime is 3899927. The reversal of 3899919 is 9199983.

3899919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3899919 - 2⁵ = 3899887 is a prime.

It is a super-2 number, since 2×3899919² = 30418736413122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899989) 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 in 15 ways as a sum of consecutive naturals, for example, 1584 + ... + 3210.

It is an arithmetic number, because the mean of its divisors is an integer number (351648).

Almost surely, 2^3899919 is an apocalyptic number.

3899919 is a deficient number, since it is larger than the sum of its proper divisors (1726449).

3899919 is a wasteful number, since it uses less digits than its factorization.

3899919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694.

The product of its digits is 157464, while the sum is 48.

The square root of 3899919 is about 1974.8212577345. The cubic root of 3899919 is about 157.4050019211.

The spelling of 3899919 in words is "three million, eight hundred ninety-nine thousand, nine hundred nineteen".