3872881 has 4 divisors (see below), whose sum is σ = 3962992. Its totient is φ = 3782772.

The previous prime is 3872873. The next prime is 3872887. The reversal of 3872881 is 1882783.

3872881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1882783 = 7 ⋅268969.

It is a cyclic number.

It is not a de Polignac number, because 3872881 - 2³ = 3872873 is a prime.

It is a super-2 number, since 2×3872881² = 29998414480322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3872881.

It is not an unprimeable number, because it can be changed into a prime (3872887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44991 + ... + 45076.

It is an arithmetic number, because the mean of its divisors is an integer number (990748).

Almost surely, 2^3872881 is an apocalyptic number.

It is an amenable number.

3872881 is a deficient number, since it is larger than the sum of its proper divisors (90111).

3872881 is an equidigital number, since it uses as much as digits as its factorization.

3872881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90110.

The product of its digits is 21504, while the sum is 37.

The square root of 3872881 is about 1967.9636683638. The cubic root of 3872881 is about 157.0403969235.

It can be divided in two parts, 38728 and 81, that added together give a square (38809 = 197²).

The spelling of 3872881 in words is "three million, eight hundred seventy-two thousand, eight hundred eighty-one".