44422381 has 2 divisors, whose sum is σ = 44422382. Its totient is φ = 44422380.

The previous prime is 44422363. The next prime is 44422409. The reversal of 44422381 is 18322444.

It is a happy number.

It is an a-pointer prime, because the next prime (44422409) can be obtained adding 44422381 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42693156 + 1729225 = 6534^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 44422381 - 2⁹ = 44421869 is a prime.

It is a super-2 number, since 2×44422381² = 3946695867418322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44422351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22211190 + 22211191.

It is an arithmetic number, because the mean of its divisors is an integer number (22211191).

Almost surely, 2^44422381 is an apocalyptic number.

It is an amenable number.

44422381 is a deficient number, since it is larger than the sum of its proper divisors (1).

44422381 is an equidigital number, since it uses as much as digits as its factorization.

44422381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6144, while the sum is 28.

The square root of 44422381 is about 6665.0117029155. The cubic root of 44422381 is about 354.1608985881.

The spelling of 44422381 in words is "forty-four million, four hundred twenty-two thousand, three hundred eighty-one".