289427779289 has 8 divisors (see below), whose sum is σ = 323440356960. Its totient is φ = 256698695200.

The previous prime is 289427779229. The next prime is 289427779331. The reversal of 289427779289 is 982977724982.

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

It is a cyclic number.

It is not a de Polignac number, because 289427779289 - 2²⁸ = 289159343833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289427779229) 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, 320872919 + ... + 320873820.

It is an arithmetic number, because the mean of its divisors is an integer number (40430044620).

Almost surely, 2^289427779289 is an apocalyptic number.

It is an amenable number.

289427779289 is a deficient number, since it is larger than the sum of its proper divisors (34012577671).

289427779289 is a wasteful number, since it uses less digits than its factorization.

289427779289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641746791.

The product of its digits is 512096256, while the sum is 74.

The spelling of 289427779289 in words is "two hundred eighty-nine billion, four hundred twenty-seven million, seven hundred seventy-nine thousand, two hundred eighty-nine".