3831890 has 16 divisors (see below), whose sum is σ = 6950232. Its totient is φ = 1521024.

The previous prime is 3831889. The next prime is 3831907. The reversal of 3831890 is 981383.

3831890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3508129 + 323761 = 1873^2 + 569^2 .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29 + ... + 2768.

Almost surely, 2^3831890 is an apocalyptic number.

3831890 is a deficient number, since it is larger than the sum of its proper divisors (3118342).

3831890 is a wasteful number, since it uses less digits than its factorization.

3831890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 3831890 is about 1957.5213919648. The cubic root of 3831890 is about 156.4843863609.

The spelling of 3831890 in words is "three million, eight hundred thirty-one thousand, eight hundred ninety".