289228844 has 12 divisors (see below), whose sum is σ = 515700864. Its totient is φ = 141885744.

The previous prime is 289228831. The next prime is 289228859. The reversal of 289228844 is 448822982.

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, 681932 + ... + 682355.

It is an arithmetic number, because the mean of its divisors is an integer number (42975072).

Almost surely, 2^289228844 is an apocalyptic number.

It is an amenable number.

289228844 is a deficient number, since it is larger than the sum of its proper divisors (226472020).

289228844 is a wasteful number, since it uses less digits than its factorization.

289228844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364344 (or 1364342 counting only the distinct ones).

The product of its digits is 589824, while the sum is 47.

The square root of 289228844 is about 17006.7293739861. The cubic root of 289228844 is about 661.3233655613.

It can be divided in two parts, 28922884 and 4, that multiplied together give a square (115691536 = 10756²).

The spelling of 289228844 in words is "two hundred eighty-nine million, two hundred twenty-eight thousand, eight hundred forty-four".