3865879 has 4 divisors (see below), whose sum is σ = 3920400. Its totient is φ = 3811360.

The previous prime is 3865877. The next prime is 3865889. The reversal of 3865879 is 9785683.

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 3865879 - 2¹ = 3865877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865877) 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, 27154 + ... + 27295.

It is an arithmetic number, because the mean of its divisors is an integer number (980100).

Almost surely, 2^3865879 is an apocalyptic number.

3865879 is a deficient number, since it is larger than the sum of its proper divisors (54521).

3865879 is an equidigital number, since it uses as much as digits as its factorization.

3865879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54520.

The product of its digits is 362880, while the sum is 46.

The square root of 3865879 is about 1966.1838672922. The cubic root of 3865879 is about 156.9456991004.

The spelling of 3865879 in words is "three million, eight hundred sixty-five thousand, eight hundred seventy-nine".