289421964380 has 24 divisors (see below), whose sum is σ = 609055009920. Its totient is φ = 115527093440.

The previous prime is 289421964379. The next prime is 289421964397. The reversal of 289421964380 is 83469124982.

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 7 ways as a sum of consecutive naturals, for example, 15095951 + ... + 15115110.

It is an arithmetic number, because the mean of its divisors is an integer number (25377292080).

Almost surely, 2^289421964380 is an apocalyptic number.

289421964380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289421964380 is an abundant number, since it is smaller than the sum of its proper divisors (319633045540).

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

289421964380 is a wasteful number, since it uses less digits than its factorization.

289421964380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30211549 (or 30211547 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 56.

The spelling of 289421964380 in words is "two hundred eighty-nine billion, four hundred twenty-one million, nine hundred sixty-four thousand, three hundred eighty".