244400161 has 2 divisors, whose sum is σ = 244400162. Its totient is φ = 244400160.

The previous prime is 244400159. The next prime is 244400179. The reversal of 244400161 is 161004442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154529761 + 89870400 = 12431^2 + 9480^2 .

It is a cyclic number.

It is not a de Polignac number, because 244400161 - 2¹ = 244400159 is a prime.

Together with 244400159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (244400561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122200080 + 122200081.

It is an arithmetic number, because the mean of its divisors is an integer number (122200081).

Almost surely, 2^244400161 is an apocalyptic number.

It is an amenable number.

244400161 is a deficient number, since it is larger than the sum of its proper divisors (1).

244400161 is an equidigital number, since it uses as much as digits as its factorization.

244400161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 244400161 is about 15633.3029459548. The cubic root of 244400161 is about 625.2213922875.

The spelling of 244400161 in words is "two hundred forty-four million, four hundred thousand, one hundred sixty-one".