444003997 has 2 divisors, whose sum is σ = 444003998. Its totient is φ = 444003996.

The previous prime is 444003991. The next prime is 444004037. The reversal of 444003997 is 799300444.

It is an a-pointer prime, because the next prime (444004037) can be obtained adding 444003997 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 389628121 + 54375876 = 19739^2 + 7374^2 .

It is a cyclic number.

It is not a de Polignac number, because 444003997 - 2¹⁹ = 443479709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444003991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222001998 + 222001999.

It is an arithmetic number, because the mean of its divisors is an integer number (222001999).

Almost surely, 2^444003997 is an apocalyptic number.

It is an amenable number.

444003997 is a deficient number, since it is larger than the sum of its proper divisors (1).

444003997 is an equidigital number, since it uses as much as digits as its factorization.

444003997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 444003997 is about 21071.4023501048. The cubic root of 444003997 is about 762.8906518163.

The spelling of 444003997 in words is "four hundred forty-four million, three thousand, nine hundred ninety-seven".