289444444 has 6 divisors (see below), whose sum is σ = 506527784. Its totient is φ = 144722220.

The previous prime is 289444429. The next prime is 289444453. The reversal of 289444444 is 444444982.

It is a self number, because there is not a number n which added to its sum of digits gives 289444444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36180552 + ... + 36180559.

Almost surely, 2^289444444 is an apocalyptic number.

It is an amenable number.

289444444 is a deficient number, since it is larger than the sum of its proper divisors (217083340).

289444444 is a wasteful number, since it uses less digits than its factorization.

289444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72361115 (or 72361113 counting only the distinct ones).

The product of its digits is 589824, while the sum is 43.

The square root of 289444444 is about 17013.0668605046. The cubic root of 289444444 is about 661.4876482819.

The spelling of 289444444 in words is "two hundred eighty-nine million, four hundred forty-four thousand, four hundred forty-four".