4244261905 has 16 divisors (see below), whose sum is σ = 5807534544. Its totient is φ = 2949857280.

The previous prime is 4244261867. The next prime is 4244261909. The reversal of 4244261905 is 5091624424.

It is a Cunningham number, because it is equal to 65148²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 939851649 + 3304410256 = 30657^2 + 57484^2 .

It is not a de Polignac number, because 4244261905 - 2¹⁵ = 4244229137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4244261909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1919376 + ... + 1921585.

It is an arithmetic number, because the mean of its divisors is an integer number (362970909).

Almost surely, 2^4244261905 is an apocalyptic number.

It is an amenable number.

4244261905 is a deficient number, since it is larger than the sum of its proper divisors (1563272639).

4244261905 is a wasteful number, since it uses less digits than its factorization.

4244261905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840996.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 4244261905 is about 65148.0000076748. Note that the first 5 decimals coincide. The cubic root of 4244261905 is about 1619.0765840675.

The spelling of 4244261905 in words is "four billion, two hundred forty-four million, two hundred sixty-one thousand, nine hundred five".