289766620221 has 8 divisors (see below), whose sum is σ = 416075147040. Its totient is φ = 178317920112.

The previous prime is 289766620201. The next prime is 289766620303. The reversal of 289766620221 is 122026667982.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 289766620221 - 2⁵ = 289766620189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289766620201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3714956631 + ... + 3714956708.

It is an arithmetic number, because the mean of its divisors is an integer number (52009393380).

Almost surely, 2^289766620221 is an apocalyptic number.

It is an amenable number.

289766620221 is a deficient number, since it is larger than the sum of its proper divisors (126308526819).

289766620221 is a wasteful number, since it uses less digits than its factorization.

289766620221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7429913355.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 289766620221 in words is "two hundred eighty-nine billion, seven hundred sixty-six million, six hundred twenty thousand, two hundred twenty-one".