289039960 has 128 divisors (see below), whose sum is σ = 735220800. Its totient is φ = 102220800.

The previous prime is 289039957. The next prime is 289039963. The reversal of 289039960 is 69930982.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (289039957) and next prime (289039963).

It is a self number, because there is not a number n which added to its sum of digits gives 289039960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289039963) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 3247596 + ... + 3247684.

Almost surely, 2^289039960 is an apocalyptic number.

289039960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289039960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367610400).

289039960 is an abundant number, since it is smaller than the sum of its proper divisors (446180840).

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

289039960 is a wasteful number, since it uses less digits than its factorization.

289039960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 289039960 is about 17001.1752534935. The cubic root of 289039960 is about 661.1793727714.

The spelling of 289039960 in words is "two hundred eighty-nine million, thirty-nine thousand, nine hundred sixty".