944005549 has 2 divisors, whose sum is σ = 944005550. Its totient is φ = 944005548.

The previous prime is 944005547. The next prime is 944005553. The reversal of 944005549 is 945500449.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 630361449 + 313644100 = 25107^2 + 17710^2 .

It is a cyclic number.

It is not a de Polignac number, because 944005549 - 2¹ = 944005547 is a prime.

It is a super-2 number, since 2×944005549² = 1782292953085582802, which contains 22 as substring.

Together with 944005547, 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 (944005541) 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, 472002774 + 472002775.

It is an arithmetic number, because the mean of its divisors is an integer number (472002775).

Almost surely, 2^944005549 is an apocalyptic number.

It is an amenable number.

944005549 is a deficient number, since it is larger than the sum of its proper divisors (1).

944005549 is an equidigital number, since it uses as much as digits as its factorization.

944005549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 944005549 is about 30724.6732936251. The cubic root of 944005549 is about 980.9755484136.

The spelling of 944005549 in words is "nine hundred forty-four million, five thousand, five hundred forty-nine".