4489139700081 has 9 divisors (see below), whose sum is σ = 6484322081419. Its totient is φ = 2992755562536.

The previous prime is 4489139700061. The next prime is 4489139700137. The reversal of 4489139700081 is 1800079319844.

The square root of 4489139700081 is 2118759.

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

4489139700081 is a `hidden beast` number, since 4 + 489 + 13 + 9 + 70 + 0 + 0 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 104655485025 + 4384484215056 = 323505^2 + 2093916^2 .

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

It is not a de Polignac number, because 4489139700081 - 2¹³ = 4489139691889 is a prime.

It is a super-2 number, since 2×4489139700081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4489139700061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6003151 + ... + 6709403.

Almost surely, 2^{4489139700081} is an apocalyptic number.

4489139700081 is the 2118759-th square number.

4489139700081 is the 1059380-th centered octagonal number.

It is an amenable number.

4489139700081 is a deficient number, since it is larger than the sum of its proper divisors (1995182381338).

4489139700081 is an frugal number, since it uses more digits than its factorization.

4489139700081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412512 (or 706256 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 4489139700081 in words is "four trillion, four hundred eighty-nine billion, one hundred thirty-nine million, seven hundred thousand, eighty-one".