289821096 has 96 divisors (see below), whose sum is σ = 808541760. Its totient is φ = 93747456.

The previous prime is 289821089. The next prime is 289821101. The reversal of 289821096 is 690128982.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351741 + ... + 352563.

It is an arithmetic number, because the mean of its divisors is an integer number (8422310).

Almost surely, 2^289821096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289821096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404270880).

289821096 is an abundant number, since it is smaller than the sum of its proper divisors (518720664).

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

289821096 is a wasteful number, since it uses less digits than its factorization.

289821096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 289821096 is about 17024.1327532418. The cubic root of 289821096 is about 661.7744536387.

The spelling of 289821096 in words is "two hundred eighty-nine million, eight hundred twenty-one thousand, ninety-six".