289223764 has 6 divisors (see below), whose sum is σ = 506141594. Its totient is φ = 144611880.

The previous prime is 289223749. The next prime is 289223773. The reversal of 289223764 is 467322982.

It can be written as a sum of positive squares in only one way, i.e., 192987664 + 96236100 = 13892^2 + 9810^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 289223764.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36152967 + ... + 36152974.

Almost surely, 2^289223764 is an apocalyptic number.

It is an amenable number.

289223764 is a deficient number, since it is larger than the sum of its proper divisors (216917830).

289223764 is a wasteful number, since it uses less digits than its factorization.

289223764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72305945 (or 72305943 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 289223764 is about 17006.5800206861. The cubic root of 289223764 is about 661.3194937225.

The spelling of 289223764 in words is "two hundred eighty-nine million, two hundred twenty-three thousand, seven hundred sixty-four".