289694198440 has 64 divisors (see below), whose sum is σ = 663111230400. Its totient is φ = 113870410752.

The previous prime is 289694198419. The next prime is 289694198489. The reversal of 289694198440 is 44891496982.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6593184 + ... + 6636976.

It is an arithmetic number, because the mean of its divisors is an integer number (10361112975).

Almost surely, 2^289694198440 is an apocalyptic number.

289694198440 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 289694198440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331555615200).

289694198440 is an abundant number, since it is smaller than the sum of its proper divisors (373417031960).

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

289694198440 is a wasteful number, since it uses less digits than its factorization.

289694198440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46666 (or 46662 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 64.

The spelling of 289694198440 in words is "two hundred eighty-nine billion, six hundred ninety-four million, one hundred ninety-eight thousand, four hundred forty".