244421909 has 12 divisors (see below), whose sum is σ = 259872480. Its totient is φ = 229844520.

The previous prime is 244421873. The next prime is 244421911. The reversal of 244421909 is 909124442.

It is a happy number.

It is not a de Polignac number, because 244421909 - 2¹⁶ = 244356373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244421929) 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 in 11 ways as a sum of consecutive naturals, for example, 47744 + ... + 52614.

It is an arithmetic number, because the mean of its divisors is an integer number (21656040).

Almost surely, 2^244421909 is an apocalyptic number.

It is an amenable number.

244421909 is a deficient number, since it is larger than the sum of its proper divisors (15450571).

244421909 is a wasteful number, since it uses less digits than its factorization.

244421909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5048 (or 5029 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 244421909 is about 15633.9984968657. The cubic root of 244421909 is about 625.2399368900.

The spelling of 244421909 in words is "two hundred forty-four million, four hundred twenty-one thousand, nine hundred nine".