4442639571049 has 9 divisors (see below), whose sum is σ = 4528158394053. Its totient is φ = 4358706579552.

The previous prime is 4442639571031. The next prime is 4442639571059. The reversal of 4442639571049 is 9401759362444.

The square root of 4442639571049 is 2107757.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 140051835225 + 4302587735824 = 374235^2 + 2074268^2 .

It is not a de Polignac number, because 4442639571049 - 2⁵ = 4442639571017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4442639570984 and 4442639571002.

It is not an unprimeable number, because it can be changed into a prime (4442639571059) 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 8 ways as a sum of consecutive naturals, for example, 111691237 + ... + 111731005.

Almost surely, 2^{4442639571049} is an apocalyptic number.

4442639571049 is the 2107757-th square number.

4442639571049 is the 1053879-th centered octagonal number.

It is an amenable number.

4442639571049 is a deficient number, since it is larger than the sum of its proper divisors (85518823004).

4442639571049 is an frugal number, since it uses more digits than its factorization.

4442639571049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79644 (or 39822 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 58.

The spelling of 4442639571049 in words is "four trillion, four hundred forty-two billion, six hundred thirty-nine million, five hundred seventy-one thousand, forty-nine".