289996144 has 20 divisors (see below), whose sum is σ = 586297296. Its totient is φ = 138693632.

The previous prime is 289996139. The next prime is 289996169. The reversal of 289996144 is 441699982.

It is a junction number, because it is equal to n+sod(n) for n = 289996091 and 289996100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393649 + ... + 394384.

Almost surely, 2^289996144 is an apocalyptic number.

It is an amenable number.

289996144 is an abundant number, since it is smaller than the sum of its proper divisors (296301152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289996144 is a wasteful number, since it uses less digits than its factorization.

289996144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788064 (or 788058 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 52.

The square root of 289996144 is about 17029.2731494917. The cubic root of 289996144 is about 661.9076610801.

The spelling of 289996144 in words is "two hundred eighty-nine million, nine hundred ninety-six thousand, one hundred forty-four".