289143494 has 4 divisors (see below), whose sum is σ = 433715244. Its totient is φ = 144571746.

The previous prime is 289143487. The next prime is 289143509. The reversal of 289143494 is 494341982.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 72285872 + ... + 72285875.

It is an arithmetic number, because the mean of its divisors is an integer number (108428811).

Almost surely, 2^289143494 is an apocalyptic number.

289143494 is a deficient number, since it is larger than the sum of its proper divisors (144571750).

289143494 is a wasteful number, since it uses less digits than its factorization.

289143494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144571749.

The product of its digits is 248832, while the sum is 44.

The square root of 289143494 is about 17004.2198880160. The cubic root of 289143494 is about 661.2583080778.

The spelling of 289143494 in words is "two hundred eighty-nine million, one hundred forty-three thousand, four hundred ninety-four".