289273793 has 4 divisors (see below), whose sum is σ = 289854000. Its totient is φ = 288693588.

The previous prime is 289273729. The next prime is 289273813. The reversal of 289273793 is 397372982.

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 not a de Polignac number, because 289273793 - 2⁶ = 289273729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289273703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289355 + ... + 290352.

It is an arithmetic number, because the mean of its divisors is an integer number (72463500).

Almost surely, 2^289273793 is an apocalyptic number.

It is an amenable number.

289273793 is a deficient number, since it is larger than the sum of its proper divisors (580207).

289273793 is an equidigital number, since it uses as much as digits as its factorization.

289273793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580206.

The product of its digits is 1143072, while the sum is 50.

The square root of 289273793 is about 17008.0508289457. The cubic root of 289273793 is about 661.3576224998.

The spelling of 289273793 in words is "two hundred eighty-nine million, two hundred seventy-three thousand, seven hundred ninety-three".