289308061109 has 4 divisors (see below), whose sum is σ = 289414701516. Its totient is φ = 289201420704.

The previous prime is 289308061099. The next prime is 289308061117. The reversal of 289308061109 is 901160803982.

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 180026247025 + 109281814084 = 424295^2 + 330578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289308061109 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 (289308061169) 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, 53316134 + ... + 53321559.

It is an arithmetic number, because the mean of its divisors is an integer number (72353675379).

Almost surely, 2^289308061109 is an apocalyptic number.

It is an amenable number.

289308061109 is a deficient number, since it is larger than the sum of its proper divisors (106640407).

289308061109 is a wasteful number, since it uses less digits than its factorization.

289308061109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106640406.

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 289308061109 in words is "two hundred eighty-nine billion, three hundred eight million, sixty-one thousand, one hundred nine".