4421385 has 28 divisors (see below), whose sum is σ = 7961412. Its totient is φ = 2356128.

The previous prime is 4421371. The next prime is 4421407. The reversal of 4421385 is 5831244.

It can be written as a sum of positive squares in 2 ways, for example, as 746496 + 3674889 = 864^2 + 1917^2 .

It is not a de Polignac number, because 4421385 - 2⁵ = 4421353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

4421385 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 3039 + ... + 4251.

Almost surely, 2^4421385 is an apocalyptic number.

4421385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4421385 is a deficient number, since it is larger than the sum of its proper divisors (3540027).

4421385 is an equidigital number, since it uses as much as digits as its factorization.

4421385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236 (or 1221 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 4421385 is about 2102.7089670233. The cubic root of 4421385 is about 164.1292976977.

The spelling of 4421385 in words is "four million, four hundred twenty-one thousand, three hundred eighty-five".