244688945 has 4 divisors (see below), whose sum is σ = 293626740. Its totient is φ = 195751152.

The previous prime is 244688923. The next prime is 244688947. The reversal of 244688945 is 549886442.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62789776 + 181899169 = 7924^2 + 13487^2 .

It is a cyclic number.

It is not a de Polignac number, because 244688945 - 2¹² = 244684849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 244688893 and 244688902.

It is not an unprimeable number, because it can be changed into a prime (244688947) 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 3 ways as a sum of consecutive naturals, for example, 24468890 + ... + 24468899.

It is an arithmetic number, because the mean of its divisors is an integer number (73406685).

Almost surely, 2^244688945 is an apocalyptic number.

It is an amenable number.

244688945 is a deficient number, since it is larger than the sum of its proper divisors (48937795).

244688945 is an equidigital number, since it uses as much as digits as its factorization.

244688945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48937794.

The product of its digits is 2211840, while the sum is 50.

The square root of 244688945 is about 15642.5363991905. The cubic root of 244688945 is about 625.4675498815.

The spelling of 244688945 in words is "two hundred forty-four million, six hundred eighty-eight thousand, nine hundred forty-five".