441728381 has 2 divisors, whose sum is σ = 441728382. Its totient is φ = 441728380.

The previous prime is 441728351. The next prime is 441728401. The reversal of 441728381 is 183827144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284225881 + 157502500 = 16859^2 + 12550^2 .

It is a cyclic number.

It is not a de Polignac number, because 441728381 - 2¹⁸ = 441466237 is a prime.

It is a super-2 number, since 2×441728381² = 390247925161762322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441728351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220864190 + 220864191.

It is an arithmetic number, because the mean of its divisors is an integer number (220864191).

Almost surely, 2^441728381 is an apocalyptic number.

It is an amenable number.

441728381 is a deficient number, since it is larger than the sum of its proper divisors (1).

441728381 is an equidigital number, since it uses as much as digits as its factorization.

441728381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 38.

The square root of 441728381 is about 21017.3352497409. The cubic root of 441728381 is about 761.5850926103.

The spelling of 441728381 in words is "four hundred forty-one million, seven hundred twenty-eight thousand, three hundred eighty-one".