3888861 has 4 divisors (see below), whose sum is σ = 5185152. Its totient is φ = 2592572.

The previous prime is 3888851. The next prime is 3888887. The reversal of 3888861 is 1688883.

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 3888861 - 2¹⁸ = 3626717 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3888851) 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, 648141 + ... + 648146.

It is an arithmetic number, because the mean of its divisors is an integer number (1296288).

Almost surely, 2^3888861 is an apocalyptic number.

It is an amenable number.

3888861 is a deficient number, since it is larger than the sum of its proper divisors (1296291).

3888861 is a wasteful number, since it uses less digits than its factorization.

3888861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296290.

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

The square root of 3888861 is about 1972.0195232299. The cubic root of 3888861 is about 157.2560900918.

The spelling of 3888861 in words is "three million, eight hundred eighty-eight thousand, eight hundred sixty-one".