44240381 has 2 divisors, whose sum is σ = 44240382. Its totient is φ = 44240380.

The previous prime is 44240377. The next prime is 44240389. The reversal of 44240381 is 18304244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44023225 + 217156 = 6635^2 + 466^2 .

It is a cyclic number.

It is not a de Polignac number, because 44240381 - 2² = 44240377 is a prime.

It is a super-2 number, since 2×44240381² = 3914422622050322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 44240381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44240389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22120190 + 22120191.

It is an arithmetic number, because the mean of its divisors is an integer number (22120191).

Almost surely, 2^44240381 is an apocalyptic number.

It is an amenable number.

44240381 is a deficient number, since it is larger than the sum of its proper divisors (1).

44240381 is an equidigital number, since it uses as much as digits as its factorization.

44240381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 44240381 is about 6651.3443002148. The cubic root of 44240381 is about 353.6765668099.

The spelling of 44240381 in words is "forty-four million, two hundred forty thousand, three hundred eighty-one".