244009 has 2 divisors, whose sum is σ = 244010. Its totient is φ = 244008.

The previous prime is 244003. The next prime is 244021. The reversal of 244009 is 900442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138384 + 105625 = 372^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 244009 - 2¹⁵ = 211241 is a prime.

It is equal to p₂₁₅₄₇ and since 244009 and 21547 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (244003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122004 + 122005.

It is an arithmetic number, because the mean of its divisors is an integer number (122005).

2²⁴⁴⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

244009 is a deficient number, since it is larger than the sum of its proper divisors (1).

244009 is an equidigital number, since it uses as much as digits as its factorization.

244009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 244009 is about 493.9726713088. The cubic root of 244009 is about 62.4887659809.

The spelling of 244009 in words is "two hundred forty-four thousand, nine".