13931789089 has 3 divisors (see below), whose sum is σ = 13931907123. Its totient is φ = 13931671056.

The previous prime is 13931789071. The next prime is 13931789099. The reversal of 13931789089 is 98098713931.

It is a happy number.

The square root of 13931789089 is 118033.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98098713931 = 44741 ⋅2192591.

It can be written as a sum of positive squares in only one way, i.e., 197824225 + 13733964864 = 14065^2 + 117192^2 .

It is not a de Polignac number, because 13931789089 - 2¹⁹ = 13931264801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13931789059) 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, 59017 + ... + 177049.

It is an arithmetic number, because the mean of its divisors is an integer number (4643969041).

Almost surely, 2^13931789089 is an apocalyptic number.

13931789089 is the 118033-rd square number.

13931789089 is the 59017-th centered octagonal number.

It is an amenable number.

13931789089 is a deficient number, since it is larger than the sum of its proper divisors (118034).

13931789089 is an frugal number, since it uses more digits than its factorization.

13931789089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236066 (or 118033 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 58.

The spelling of 13931789089 in words is "thirteen billion, nine hundred thirty-one million, seven hundred eighty-nine thousand, eighty-nine".