444002641 has 2 divisors, whose sum is σ = 444002642. Its totient is φ = 444002640.

The previous prime is 444002639. The next prime is 444002687. The reversal of 444002641 is 146200444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280060225 + 163942416 = 16735^2 + 12804^2 .

It is a cyclic number.

It is not a de Polignac number, because 444002641 - 2¹ = 444002639 is a prime.

Together with 444002639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (444008641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222001320 + 222001321.

It is an arithmetic number, because the mean of its divisors is an integer number (222001321).

Almost surely, 2^444002641 is an apocalyptic number.

It is an amenable number.

444002641 is a deficient number, since it is larger than the sum of its proper divisors (1).

444002641 is an equidigital number, since it uses as much as digits as its factorization.

444002641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 444002641 is about 21071.3701737690. The cubic root of 444002641 is about 762.8898751860.

The spelling of 444002641 in words is "four hundred forty-four million, two thousand, six hundred forty-one".