289084042721 has 4 divisors (see below), whose sum is σ = 289235635632. Its totient is φ = 288932449812.

The previous prime is 289084042703. The next prime is 289084042739. The reversal of 289084042721 is 127240480982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (289084042703) and next prime (289084042739).

It is a cyclic number.

It is not a de Polignac number, because 289084042721 - 2⁶ = 289084042657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289084042771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75793595 + ... + 75797408.

It is an arithmetic number, because the mean of its divisors is an integer number (72308908908).

Almost surely, 2^289084042721 is an apocalyptic number.

It is an amenable number.

289084042721 is a deficient number, since it is larger than the sum of its proper divisors (151592911).

289084042721 is a wasteful number, since it uses less digits than its factorization.

289084042721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151592910.

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 289084042721 in words is "two hundred eighty-nine billion, eighty-four million, forty-two thousand, seven hundred twenty-one".