444648901 has 2 divisors, whose sum is σ = 444648902. Its totient is φ = 444648900.

The previous prime is 444648899. The next prime is 444648961. The reversal of 444648901 is 109846444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310112100 + 134536801 = 17610^2 + 11599^2 .

It is a cyclic number.

It is not a de Polignac number, because 444648901 - 2¹ = 444648899 is a prime.

Together with 444648899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444648961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222324450 + 222324451.

It is an arithmetic number, because the mean of its divisors is an integer number (222324451).

Almost surely, 2^444648901 is an apocalyptic number.

It is an amenable number.

444648901 is a deficient number, since it is larger than the sum of its proper divisors (1).

444648901 is an equidigital number, since it uses as much as digits as its factorization.

444648901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 444648901 is about 21086.6996232222. The cubic root of 444648901 is about 763.2598325946.

The spelling of 444648901 in words is "four hundred forty-four million, six hundred forty-eight thousand, nine hundred one".