44381 has 2 divisors, whose sum is σ = 44382. Its totient is φ = 44380.

The previous prime is 44371. The next prime is 44383. The reversal of 44381 is 18344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36100 + 8281 = 190^2 + 91^2 .

It is a cyclic number.

It is not a de Polignac number, because 44381 - 2¹⁴ = 27997 is a prime.

It is a super-2 number, since 2×44381² = 3939346322, which contains 22 as substring.

Together with 44383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22190 + 22191.

It is an arithmetic number, because the mean of its divisors is an integer number (22191).

2⁴⁴³⁸¹ is an apocalyptic number.

It is an amenable number.

44381 is a deficient number, since it is larger than the sum of its proper divisors (1).

44381 is an equidigital number, since it uses as much as digits as its factorization.

44381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 20.

The square root of 44381 is about 210.6679852279. The cubic root of 44381 is about 35.4050893339.

The spelling of 44381 in words is "forty-four thousand, three hundred eighty-one".