4421389 has 16 divisors (see below), whose sum is σ = 5323648. Its totient is φ = 3592512.

The previous prime is 4421371. The next prime is 4421407. The reversal of 4421389 is 9831244.

4421389 = 207² + 208² + ... + 280².

4421389 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4421371) and next prime (4421407).

It is not a de Polignac number, because 4421389 - 2¹¹ = 4419341 is a prime.

It is a Duffinian number.

4421389 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 4421389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10939 + ... + 11335.

It is an arithmetic number, because the mean of its divisors is an integer number (332728).

Almost surely, 2^4421389 is an apocalyptic number.

It is an amenable number.

4421389 is a deficient number, since it is larger than the sum of its proper divisors (902259).

4421389 is a wasteful number, since it uses less digits than its factorization.

4421389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484.

The product of its digits is 6912, while the sum is 31.

The square root of 4421389 is about 2102.7099181770. The cubic root of 4421389 is about 164.1293471933.

The spelling of 4421389 in words is "four million, four hundred twenty-one thousand, three hundred eighty-nine".