4238727439489 has 3 divisors (see below), whose sum is σ = 4238729498307. Its totient is φ = 4238725380672.

The previous prime is 4238727439421. The next prime is 4238727439493. The reversal of 4238727439489 is 9849347278324.

The square root of 4238727439489 is 2058817.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 423768450625 + 3814958988864 = 650975^2 + 1953192^2 .

It is not a de Polignac number, because 4238727439489 - 2⁷ = 4238727439361 is a prime.

It is a super-2 number, since 2×4238727439489² (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 (4238721439489) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1029409 + ... + 3088225.

It is an arithmetic number, because the mean of its divisors is an integer number (1412909832769).

Almost surely, 2^{4238727439489} is an apocalyptic number.

4238727439489 is the 2058817-th square number.

4238727439489 is the 1029409-th centered octagonal number.

It is an amenable number.

4238727439489 is a deficient number, since it is larger than the sum of its proper divisors (2058818).

4238727439489 is an frugal number, since it uses more digits than its factorization.

4238727439489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4117634 (or 2058817 counting only the distinct ones).

The product of its digits is 585252864, while the sum is 70.

The spelling of 4238727439489 in words is "four trillion, two hundred thirty-eight billion, seven hundred twenty-seven million, four hundred thirty-nine thousand, four hundred eighty-nine".