3879845 has 8 divisors (see below), whose sum is σ = 4666776. Its totient is φ = 3096576.

The previous prime is 3879839. The next prime is 3879851. The reversal of 3879845 is 5489783.

It is an interprime number because it is at equal distance from previous prime (3879839) and next prime (3879851).

It can be written as a sum of positive squares in 4 ways, for example, as 556516 + 3323329 = 746^2 + 1823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3879845 - 2⁴ = 3879829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3879796 and 3879805.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2789 + ... + 3941.

It is an arithmetic number, because the mean of its divisors is an integer number (583347).

Almost surely, 2^3879845 is an apocalyptic number.

It is an amenable number.

3879845 is a deficient number, since it is larger than the sum of its proper divisors (786931).

3879845 is a wasteful number, since it uses less digits than its factorization.

3879845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831.

The product of its digits is 241920, while the sum is 44.

The square root of 3879845 is about 1969.7322153024. The cubic root of 3879845 is about 157.1344676749.

The spelling of 3879845 in words is "three million, eight hundred seventy-nine thousand, eight hundred forty-five".