3868881 has 4 divisors (see below), whose sum is σ = 5158512. Its totient is φ = 2579252.

The previous prime is 3868849. The next prime is 3868897. The reversal of 3868881 is 1888683.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3868881 - 2⁵ = 3868849 is a prime.

It is a super-2 number, since 2×3868881² = 29936480384322, which contains 22 as substring.

It is a D-number.

3868881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3868811) 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, 644811 + ... + 644816.

It is an arithmetic number, because the mean of its divisors is an integer number (1289628).

Almost surely, 2^3868881 is an apocalyptic number.

It is an amenable number.

3868881 is a deficient number, since it is larger than the sum of its proper divisors (1289631).

3868881 is a wasteful number, since it uses less digits than its factorization.

3868881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289630.

The product of its digits is 73728, while the sum is 42.

The square root of 3868881 is about 1966.9471268949. The cubic root of 3868881 is about 156.9863133294.

The spelling of 3868881 in words is "three million, eight hundred sixty-eight thousand, eight hundred eighty-one".