289194427 has 4 divisors (see below), whose sum is σ = 289284880. Its totient is φ = 289103976.

The previous prime is 289194413. The next prime is 289194449. The reversal of 289194427 is 724491982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 289194427 - 2⁷ = 289194299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289194487) 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, 40248 + ... + 46885.

It is an arithmetic number, because the mean of its divisors is an integer number (72321220).

Almost surely, 2^289194427 is an apocalyptic number.

289194427 is a deficient number, since it is larger than the sum of its proper divisors (90453).

289194427 is an equidigital number, since it uses as much as digits as its factorization.

289194427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90452.

The product of its digits is 290304, while the sum is 46.

The square root of 289194427 is about 17005.7174797184. The cubic root of 289194427 is about 661.2971329666.

The spelling of 289194427 in words is "two hundred eighty-nine million, one hundred ninety-four thousand, four hundred twenty-seven".