6872238869 has 4 divisors (see below), whose sum is σ = 6940280940. Its totient is φ = 6804196800.

The previous prime is 6872238847. The next prime is 6872238871. The reversal of 6872238869 is 9688322786.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3309700900 + 3562537969 = 57530^2 + 59687^2 .

It is a cyclic number.

It is not a de Polignac number, because 6872238869 - 2⁸ = 6872238613 is a prime.

It is a super-2 number, since 2×6872238869² = 94455334145188798322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6872238829) 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, 34020884 + ... + 34021085.

It is an arithmetic number, because the mean of its divisors is an integer number (1735070235).

Almost surely, 2^6872238869 is an apocalyptic number.

It is an amenable number.

6872238869 is a deficient number, since it is larger than the sum of its proper divisors (68042071).

6872238869 is a wasteful number, since it uses less digits than its factorization.

6872238869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68042070.

The product of its digits is 13934592, while the sum is 59.

The square root of 6872238869 is about 82898.9678403778. The cubic root of 6872238869 is about 1901.2216399329.

The spelling of 6872238869 in words is "six billion, eight hundred seventy-two million, two hundred thirty-eight thousand, eight hundred sixty-nine".