3869440 has 36 divisors (see below), whose sum is σ = 9271584. Its totient is φ = 1547264.

The previous prime is 3869417. The next prime is 3869461. The reversal of 3869440 is 449683.

3869440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3869396 and 3869405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232 + ... + 2791.

It is an arithmetic number, because the mean of its divisors is an integer number (257544).

Almost surely, 2^3869440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3869440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4635792).

3869440 is an abundant number, since it is smaller than the sum of its proper divisors (5402144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3869440 is an equidigital number, since it uses as much as digits as its factorization.

3869440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044 (or 3030 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 3869440 is about 1967.0892201423. The cubic root of 3869440 is about 156.9938737518.

The spelling of 3869440 in words is "three million, eight hundred sixty-nine thousand, four hundred forty".