289494239 has 4 divisors (see below), whose sum is σ = 289564560. Its totient is φ = 289423920.

The previous prime is 289494209. The next prime is 289494251. The reversal of 289494239 is 932494982.

It is a happy number.

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 289494239 - 2¹² = 289490143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289494209) 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, 28574 + ... + 37355.

It is an arithmetic number, because the mean of its divisors is an integer number (72391140).

Almost surely, 2^289494239 is an apocalyptic number.

289494239 is a deficient number, since it is larger than the sum of its proper divisors (70321).

289494239 is an equidigital number, since it uses as much as digits as its factorization.

289494239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70320.

The product of its digits is 1119744, while the sum is 50.

The square root of 289494239 is about 17014.5302315403. The cubic root of 289494239 is about 661.5255794398.

The spelling of 289494239 in words is "two hundred eighty-nine million, four hundred ninety-four thousand, two hundred thirty-nine".