289043898 has 128 divisors (see below), whose sum is σ = 720728064. Its totient is φ = 76032000.

The previous prime is 289043897. The next prime is 289043917. The reversal of 289043898 is 898340982.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 289043898.

It is not an unprimeable number, because it can be changed into a prime (289043897) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1914123 + ... + 1914273.

It is an arithmetic number, because the mean of its divisors is an integer number (5630688).

Almost surely, 2^289043898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289043898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360364032).

289043898 is an abundant number, since it is smaller than the sum of its proper divisors (431684166).

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

289043898 is a wasteful number, since it uses less digits than its factorization.

289043898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300.

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 289043898 is about 17001.2910686218. The cubic root of 289043898 is about 661.1823754849.

It can be divided in two parts, 289043 and 898, that added together give a triangular number (289941 = T₇₆₁).

The spelling of 289043898 in words is "two hundred eighty-nine million, forty-three thousand, eight hundred ninety-eight".