4423381 has 2 divisors, whose sum is σ = 4423382. Its totient is φ = 4423380.

The previous prime is 4423379. The next prime is 4423403. The reversal of 4423381 is 1833244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4137156 + 286225 = 2034^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 4423381 - 2¹ = 4423379 is a prime.

It is a super-2 number, since 2×4423381² = 39132598942322, which contains 22 as substring.

Together with 4423379, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 4⁷ + 4¹¹ + 2¹¹ + 3⁶ + 3¹¹ + 8⁵ + 1 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4423301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211690 + 2211691.

It is an arithmetic number, because the mean of its divisors is an integer number (2211691).

Almost surely, 2^4423381 is an apocalyptic number.

It is an amenable number.

4423381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4423381 is an equidigital number, since it uses as much as digits as its factorization.

4423381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 4423381 is about 2103.1835393042. The cubic root of 4423381 is about 164.1539922819.

The spelling of 4423381 in words is "four million, four hundred twenty-three thousand, three hundred eighty-one".