3879561 has 16 divisors (see below), whose sum is σ = 6072704. Its totient is φ = 2156544.

The previous prime is 3879541. The next prime is 3879569. The reversal of 3879561 is 1659783.

3879561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3879561 - 2⁵ = 3879529 is a prime.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (45360) is a multiple of the sum of its prime divisors (5040).

It is not an unprimeable number, because it can be changed into a prime (3879569) by changing a digit.

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, 1720 + ... + 3273.

It is an arithmetic number, because the mean of its divisors is an integer number (379544).

Almost surely, 2^3879561 is an apocalyptic number.

It is an amenable number.

3879561 is a deficient number, since it is larger than the sum of its proper divisors (2193143).

3879561 is a wasteful number, since it uses less digits than its factorization.

3879561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040.

The product of its digits is 45360, while the sum is 39.

The square root of 3879561 is about 1969.6601229654. The cubic root of 3879561 is about 157.1306335632.

The spelling of 3879561 in words is "three million, eight hundred seventy-nine thousand, five hundred sixty-one".