289173013 has 4 divisors (see below), whose sum is σ = 289221408. Its totient is φ = 289124620.

The previous prime is 289172993. The next prime is 289173023. The reversal of 289173013 is 310371982.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289173013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 289173013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289173023) 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, 13723 + ... + 27688.

It is an arithmetic number, because the mean of its divisors is an integer number (72305352).

Almost surely, 2^289173013 is an apocalyptic number.

It is an amenable number.

289173013 is a deficient number, since it is larger than the sum of its proper divisors (48395).

289173013 is an equidigital number, since it uses as much as digits as its factorization.

289173013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48394.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 289173013 is about 17005.0878562858. The cubic root of 289173013 is about 661.2808101920.

The spelling of 289173013 in words is "two hundred eighty-nine million, one hundred seventy-three thousand, thirteen".