4489721287 has 4 divisors (see below), whose sum is σ = 4490235376. Its totient is φ = 4489207200.

The previous prime is 4489721251. The next prime is 4489721293. The reversal of 4489721287 is 7821279844.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4489721287 - 2¹¹ = 4489719239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4489721237) 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 3 ways as a sum of consecutive naturals, for example, 243714 + ... + 261487.

It is an arithmetic number, because the mean of its divisors is an integer number (1122558844).

Almost surely, 2^4489721287 is an apocalyptic number.

4489721287 is a deficient number, since it is larger than the sum of its proper divisors (514089).

4489721287 is an equidigital number, since it uses as much as digits as its factorization.

4489721287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514088.

The product of its digits is 1806336, while the sum is 52.

The square root of 4489721287 is about 67005.3825226004. The cubic root of 4489721287 is about 1649.7056453179.

The spelling of 4489721287 in words is "four billion, four hundred eighty-nine million, seven hundred twenty-one thousand, two hundred eighty-seven".