289674233 has 4 divisors (see below), whose sum is σ = 293164368. Its totient is φ = 286184100.

The previous prime is 289674227. The next prime is 289674241. The reversal of 289674233 is 332476982.

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, and also an emirpimes, since its reverse is a distinct semiprime: 332476982 = 2 ⋅166238491.

It is a cyclic number.

It is not a de Polignac number, because 289674233 - 2²⁰ = 288625657 is a prime.

It is a super-2 number, since 2×289674233² = 167822322528276578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289674223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1744943 + ... + 1745108.

It is an arithmetic number, because the mean of its divisors is an integer number (73291092).

Almost surely, 2^289674233 is an apocalyptic number.

It is an amenable number.

289674233 is a deficient number, since it is larger than the sum of its proper divisors (3490135).

289674233 is an equidigital number, since it uses as much as digits as its factorization.

289674233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490134.

The product of its digits is 435456, while the sum is 44.

The square root of 289674233 is about 17019.8188298231. The cubic root of 289674233 is about 661.6626529403.

The spelling of 289674233 in words is "two hundred eighty-nine million, six hundred seventy-four thousand, two hundred thirty-three".