444420481 has 2 divisors, whose sum is σ = 444420482. Its totient is φ = 444420480.

The previous prime is 444420479. The next prime is 444420539. The reversal of 444420481 is 184024444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 384512881 + 59907600 = 19609^2 + 7740^2 .

It is a cyclic number.

It is not a de Polignac number, because 444420481 - 2¹ = 444420479 is a prime.

It is a super-3 number, since 3×444420481³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 444420479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (444420401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222210240 + 222210241.

It is an arithmetic number, because the mean of its divisors is an integer number (222210241).

Almost surely, 2^444420481 is an apocalyptic number.

It is an amenable number.

444420481 is a deficient number, since it is larger than the sum of its proper divisors (1).

444420481 is an equidigital number, since it uses as much as digits as its factorization.

444420481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16384, while the sum is 31.

The square root of 444420481 is about 21081.2827171403. The cubic root of 444420481 is about 763.1291124743.

The spelling of 444420481 in words is "four hundred forty-four million, four hundred twenty thousand, four hundred eighty-one".