3869540 has 48 divisors (see below), whose sum is σ = 9072000. Its totient is φ = 1377792.

The previous prime is 3869501. The next prime is 3869561. The reversal of 3869540 is 459683.

3869540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3869540.

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 15 ways as a sum of consecutive naturals, for example, 6161 + ... + 6759.

It is an arithmetic number, because the mean of its divisors is an integer number (189000).

Almost surely, 2^3869540 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 3869540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4536000).

3869540 is an abundant number, since it is smaller than the sum of its proper divisors (5202460).

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

3869540 is a wasteful number, since it uses less digits than its factorization.

3869540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 3869540 is about 1967.1146382456. The cubic root of 3869540 is about 156.9952261656.

The spelling of 3869540 in words is "three million, eight hundred sixty-nine thousand, five hundred forty".