244138745 has 8 divisors (see below), whose sum is σ = 295654920. Its totient is φ = 193518720.

The previous prime is 244138711. The next prime is 244138747. The reversal of 244138745 is 547831442.

It can be written as a sum of positive squares in 4 ways, for example, as 122168809 + 121969936 = 11053^2 + 11044^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 244138745 - 2¹⁰ = 244137721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 244138699 and 244138708.

It is not an unprimeable number, because it can be changed into a prime (244138747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223436 + ... + 224525.

It is an arithmetic number, because the mean of its divisors is an integer number (36956865).

Almost surely, 2^244138745 is an apocalyptic number.

It is an amenable number.

244138745 is a deficient number, since it is larger than the sum of its proper divisors (51516175).

244138745 is a wasteful number, since it uses less digits than its factorization.

244138745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448075.

The product of its digits is 107520, while the sum is 38.

The square root of 244138745 is about 15624.9398398842. The cubic root of 244138745 is about 624.9983957292.

The spelling of 244138745 in words is "two hundred forty-four million, one hundred thirty-eight thousand, seven hundred forty-five".