289103389 has 4 divisors (see below), whose sum is σ = 290027356. Its totient is φ = 288179424.

The previous prime is 289103369. The next prime is 289103413. The reversal of 289103389 is 983301982.

It is a happy number.

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 35497764 + 253605625 = 5958^2 + 15925^2 .

It is a cyclic number.

It is not a de Polignac number, because 289103389 - 2⁵ = 289103357 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 (289103329) 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, 461514 + ... + 462139.

It is an arithmetic number, because the mean of its divisors is an integer number (72506839).

Almost surely, 2^289103389 is an apocalyptic number.

It is an amenable number.

289103389 is a deficient number, since it is larger than the sum of its proper divisors (923967).

289103389 is an equidigital number, since it uses as much as digits as its factorization.

289103389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923966.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 289103389 is about 17003.0405810255. The cubic root of 289103389 is about 661.2277338805.

The spelling of 289103389 in words is "two hundred eighty-nine million, one hundred three thousand, three hundred eighty-nine".