289494889400 has 96 divisors (see below), whose sum is σ = 693480919440. Its totient is φ = 112307420160.

The previous prime is 289494889393. The next prime is 289494889493. The reversal of 289494889400 is 4988494982.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2253707 + ... + 2378693.

Almost surely, 2^289494889400 is an apocalyptic number.

289494889400 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 289494889400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346740459720).

289494889400 is an abundant number, since it is smaller than the sum of its proper divisors (403986030040).

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

289494889400 is a wasteful number, since it uses less digits than its factorization.

289494889400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125353 (or 125344 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 65.

The spelling of 289494889400 in words is "two hundred eighty-nine billion, four hundred ninety-four million, eight hundred eighty-nine thousand, four hundred".