289664055 has 48 divisors (see below), whose sum is σ = 516731904. Its totient is φ = 150033600.

The previous prime is 289664021. The next prime is 289664131. The reversal of 289664055 is 550466982.

It is not a de Polignac number, because 289664055 - 2⁶ = 289663991 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 289664055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 318912 + ... + 319818.

It is an arithmetic number, because the mean of its divisors is an integer number (10765248).

Almost surely, 2^289664055 is an apocalyptic number.

289664055 is a deficient number, since it is larger than the sum of its proper divisors (227067849).

289664055 is a wasteful number, since it uses less digits than its factorization.

289664055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 289664055 is about 17019.5198228387. The cubic root of 289664055 is about 661.6549034519.

The spelling of 289664055 in words is "two hundred eighty-nine million, six hundred sixty-four thousand, fifty-five".