3878539 has 4 divisors (see below), whose sum is σ = 4432624. Its totient is φ = 3324456.

The previous prime is 3878521. The next prime is 3878543. The reversal of 3878539 is 9358783.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3878539 - 2¹¹ = 3876491 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3878495 and 3878504.

It is not an unprimeable number, because it can be changed into a prime (3878519) 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 3 ways as a sum of consecutive naturals, for example, 277032 + ... + 277045.

It is an arithmetic number, because the mean of its divisors is an integer number (1108156).

Almost surely, 2^3878539 is an apocalyptic number.

3878539 is a deficient number, since it is larger than the sum of its proper divisors (554085).

3878539 is an equidigital number, since it uses as much as digits as its factorization.

3878539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554084.

The product of its digits is 181440, while the sum is 43.

The square root of 3878539 is about 1969.4006702548. The cubic root of 3878539 is about 157.1168346126.

The spelling of 3878539 in words is "three million, eight hundred seventy-eight thousand, five hundred thirty-nine".