3808861 has 4 divisors (see below), whose sum is σ = 4352992. Its totient is φ = 3264732.

The previous prime is 3808853. The next prime is 3808907. The reversal of 3808861 is 1688083.

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 3808861 - 2³ = 3808853 is a prime.

3808861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3808801) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 272055 + ... + 272068.

It is an arithmetic number, because the mean of its divisors is an integer number (1088248).

Almost surely, 2^3808861 is an apocalyptic number.

It is an amenable number.

3808861 is a deficient number, since it is larger than the sum of its proper divisors (544131).

3808861 is an equidigital number, since it uses as much as digits as its factorization.

3808861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544130.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 3808861 is about 1951.6303440970. The cubic root of 3808861 is about 156.1702748479.

The spelling of 3808861 in words is "three million, eight hundred eight thousand, eight hundred sixty-one".