3879831 has 4 divisors (see below), whose sum is σ = 5173112. Its totient is φ = 2586552.

The previous prime is 3879829. The next prime is 3879839. The reversal of 3879831 is 1389783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1389783 = 3 ⋅463261.

It is not a de Polignac number, because 3879831 - 2¹ = 3879829 is a prime.

It is a super-2 number, since 2×3879831² = 30106177177122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3879831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3879839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646636 + ... + 646641.

It is an arithmetic number, because the mean of its divisors is an integer number (1293278).

Almost surely, 2^3879831 is an apocalyptic number.

3879831 is a deficient number, since it is larger than the sum of its proper divisors (1293281).

3879831 is a wasteful number, since it uses less digits than its factorization.

3879831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293280.

The product of its digits is 36288, while the sum is 39.

The square root of 3879831 is about 1969.7286615166. The cubic root of 3879831 is about 157.1342786738.

The spelling of 3879831 in words is "three million, eight hundred seventy-nine thousand, eight hundred thirty-one".