4238538888847 has 4 divisors (see below), whose sum is σ = 4487864705856. Its totient is φ = 3989213071840.

The previous prime is 4238538888841. The next prime is 4238538888863. The reversal of 4238538888847 is 7488888358324.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4238538888847 is a prime.

It is a super-2 number, since 2×4238538888847² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4238538888841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124662908479 + ... + 124662908512.

It is an arithmetic number, because the mean of its divisors is an integer number (1121966176464).

Almost surely, 2^{4238538888847} is an apocalyptic number.

4238538888847 is a deficient number, since it is larger than the sum of its proper divisors (249325817009).

4238538888847 is a wasteful number, since it uses less digits than its factorization.

4238538888847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249325817008.

The product of its digits is 2642411520, while the sum is 76.

The spelling of 4238538888847 in words is "four trillion, two hundred thirty-eight billion, five hundred thirty-eight million, eight hundred eighty-eight thousand, eight hundred forty-seven".