3869931 has 24 divisors (see below), whose sum is σ = 5929200. Its totient is φ = 2236416.

The previous prime is 3869917. The next prime is 3869959. The reversal of 3869931 is 1399683.

It is not a de Polignac number, because 3869931 - 2¹⁴ = 3853547 is a prime.

It is a super-2 number, since 2×3869931² = 29952731889522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 3869931.

It is not an unprimeable number, because it can be changed into a prime (3869231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8395 + ... + 8843.

It is an arithmetic number, because the mean of its divisors is an integer number (247050).

Almost surely, 2^3869931 is an apocalyptic number.

3869931 is a deficient number, since it is larger than the sum of its proper divisors (2059269).

3869931 is a wasteful number, since it uses less digits than its factorization.

3869931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 482 counting only the distinct ones).

The product of its digits is 34992, while the sum is 39.

The square root of 3869931 is about 1967.2140198768. The cubic root of 3869931 is about 157.0005138799. Note that the first 3 decimals are identical.

The spelling of 3869931 in words is "three million, eight hundred sixty-nine thousand, nine hundred thirty-one".