3881789 has 4 divisors (see below), whose sum is σ = 4007040. Its totient is φ = 3756540.

The previous prime is 3881743. The next prime is 3881803. The reversal of 3881789 is 9871883.

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 a de Polignac number, because none of the positive numbers 2^k-3881789 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 (3881989) 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, 62579 + ... + 62640.

It is an arithmetic number, because the mean of its divisors is an integer number (1001760).

Almost surely, 2^3881789 is an apocalyptic number.

It is an amenable number.

3881789 is a deficient number, since it is larger than the sum of its proper divisors (125251).

3881789 is a wasteful number, since it uses less digits than its factorization.

3881789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125250.

The product of its digits is 96768, while the sum is 44.

The square root of 3881789 is about 1970.2256215977. The cubic root of 3881789 is about 157.1607074174.

The spelling of 3881789 in words is "three million, eight hundred eighty-one thousand, seven hundred eighty-nine".