9121377839 has 8 divisors (see below), whose sum is σ = 10444368000. Its totient is φ = 7803371736.

The previous prime is 9121377833. The next prime is 9121377851. The reversal of 9121377839 is 9387731219.

9121377839 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9121377839 - 2¹² = 9121373743 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 (9121377833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1242089 + ... + 1249410.

It is an arithmetic number, because the mean of its divisors is an integer number (1305546000).

Almost surely, 2^9121377839 is an apocalyptic number.

9121377839 is a deficient number, since it is larger than the sum of its proper divisors (1322990161).

9121377839 is a wasteful number, since it uses less digits than its factorization.

9121377839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492029.

The product of its digits is 571536, while the sum is 50.

The square root of 9121377839 is about 95505.9047336865. The cubic root of 9121377839 is about 2089.3930640733.

The spelling of 9121377839 in words is "nine billion, one hundred twenty-one million, three hundred seventy-seven thousand, eight hundred thirty-nine".