289129039 has 4 divisors (see below), whose sum is σ = 289247056. Its totient is φ = 289011024.

The previous prime is 289128949. The next prime is 289129051. The reversal of 289129039 is 930921982.

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 289129039 - 2¹³ = 289120847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 289128986 and 289129004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289129069) 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, 55254 + ... + 60259.

It is an arithmetic number, because the mean of its divisors is an integer number (72311764).

Almost surely, 2^289129039 is an apocalyptic number.

289129039 is a deficient number, since it is larger than the sum of its proper divisors (118017).

289129039 is a wasteful number, since it uses less digits than its factorization.

289129039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118016.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 289129039 is about 17003.7948411524. The cubic root of 289129039 is about 661.2472885801.

The spelling of 289129039 in words is "two hundred eighty-nine million, one hundred twenty-nine thousand, thirty-nine".