289235073 has 4 divisors (see below), whose sum is σ = 385646768. Its totient is φ = 192823380.

The previous prime is 289235029. The next prime is 289235077. The reversal of 289235073 is 370532982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 289235073 - 2⁸ = 289234817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (289235077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48205843 + ... + 48205848.

It is an arithmetic number, because the mean of its divisors is an integer number (96411692).

Almost surely, 2^289235073 is an apocalyptic number.

It is an amenable number.

289235073 is a deficient number, since it is larger than the sum of its proper divisors (96411695).

289235073 is an equidigital number, since it uses as much as digits as its factorization.

289235073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96411694.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 289235073 is about 17006.9125063899. The cubic root of 289235073 is about 661.3281130750.

The spelling of 289235073 in words is "two hundred eighty-nine million, two hundred thirty-five thousand, seventy-three".