38923668239 has 4 divisors (see below), whose sum is σ = 38988433680. Its totient is φ = 38858902800.

The previous prime is 38923668229. The next prime is 38923668247. The reversal of 38923668239 is 93286632983.

It is a happy number.

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 38923668239 - 2²⁰ = 38922619663 is a prime.

It is a super-2 number, since 2×38923668239² (a number of 22 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 (38923668229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32381819 + ... + 32383020.

It is an arithmetic number, because the mean of its divisors is an integer number (9747108420).

Almost surely, 2^38923668239 is an apocalyptic number.

38923668239 is a deficient number, since it is larger than the sum of its proper divisors (64765441).

38923668239 is an equidigital number, since it uses as much as digits as its factorization.

38923668239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64765440.

The product of its digits is 20155392, while the sum is 59.

The spelling of 38923668239 in words is "thirty-eight billion, nine hundred twenty-three million, six hundred sixty-eight thousand, two hundred thirty-nine".