244991473 has 2 divisors, whose sum is σ = 244991474. Its totient is φ = 244991472.

The previous prime is 244991407. The next prime is 244991477. The reversal of 244991473 is 374199442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156950784 + 88040689 = 12528^2 + 9383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244991473 is a prime.

It is not a weakly prime, because it can be changed into another prime (244991477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122495736 + 122495737.

It is an arithmetic number, because the mean of its divisors is an integer number (122495737).

Almost surely, 2^244991473 is an apocalyptic number.

It is an amenable number.

244991473 is a deficient number, since it is larger than the sum of its proper divisors (1).

244991473 is an equidigital number, since it uses as much as digits as its factorization.

244991473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 244991473 is about 15652.2034551050. The cubic root of 244991473 is about 625.7252151353.

The spelling of 244991473 in words is "two hundred forty-four million, nine hundred ninety-one thousand, four hundred seventy-three".