4421881 has 4 divisors (see below), whose sum is σ = 4465764. Its totient is φ = 4378000.

The previous prime is 4421869. The next prime is 4421897. The reversal of 4421881 is 1881244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4326400 + 95481 = 2080^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 4421881 - 2⁵ = 4421849 is a prime.

It is a super-2 number, since 2×4421881² = 39106063156322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4421801) 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, 21790 + ... + 21991.

It is an arithmetic number, because the mean of its divisors is an integer number (1116441).

Almost surely, 2^4421881 is an apocalyptic number.

It is an amenable number.

4421881 is a deficient number, since it is larger than the sum of its proper divisors (43883).

4421881 is a wasteful number, since it uses less digits than its factorization.

4421881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43882.

The product of its digits is 2048, while the sum is 28.

The square root of 4421881 is about 2102.8269068090. The cubic root of 4421881 is about 164.1354349215.

The spelling of 4421881 in words is "four million, four hundred twenty-one thousand, eight hundred eighty-one".