444450161 has 2 divisors, whose sum is σ = 444450162. Its totient is φ = 444450160.

The previous prime is 444450157. The next prime is 444450191. The reversal of 444450161 is 161054444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442849936 + 1600225 = 21044^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 444450161 - 2² = 444450157 is a prime.

It is a super-2 number, since 2×444450161² = 395071891225851842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (444450191) 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, 222225080 + 222225081.

It is an arithmetic number, because the mean of its divisors is an integer number (222225081).

Almost surely, 2^444450161 is an apocalyptic number.

It is an amenable number.

444450161 is a deficient number, since it is larger than the sum of its proper divisors (1).

444450161 is an equidigital number, since it uses as much as digits as its factorization.

444450161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 444450161 is about 21081.9866473727. The cubic root of 444450161 is about 763.1461002661.

The spelling of 444450161 in words is "four hundred forty-four million, four hundred fifty thousand, one hundred sixty-one".