4459999120641 has 9 divisors (see below), whose sum is σ = 6442230103491. Its totient is φ = 2973328523352.

The previous prime is 4459999120639. The next prime is 4459999120673. The reversal of 4459999120641 is 1460219999544.

The square root of 4459999120641 is 2111871.

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

4459999120641 is a `hidden beast` number, since 4 + 459 + 99 + 91 + 2 + 0 + 6 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4459086839025 + 912281616 = 2111655^2 + 30204^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 4459999120641 - 2¹ = 4459999120639 is a prime.

It is a super-2 number, since 2×4459999120641² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4459999120631) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5983635 + ... + 6687591.

Almost surely, 2^{4459999120641} is an apocalyptic number.

4459999120641 is the 2111871-st square number.

4459999120641 is the 1055936-th centered octagonal number.

It is an amenable number.

4459999120641 is a deficient number, since it is larger than the sum of its proper divisors (1982230982850).

4459999120641 is an frugal number, since it uses more digits than its factorization.

4459999120641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407920 (or 703960 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The spelling of 4459999120641 in words is "four trillion, four hundred fifty-nine billion, nine hundred ninety-nine million, one hundred twenty thousand, six hundred forty-one".