289223881 has 8 divisors (see below), whose sum is σ = 296763264. Its totient is φ = 281707680.

The previous prime is 289223849. The next prime is 289223887. The reversal of 289223881 is 188322982.

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 289223881 - 2⁵ = 289223849 is a prime.

It is a super-2 number, since 2×289223881² = 167300906681404322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289223887) 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, 21076 + ... + 31978.

It is an arithmetic number, because the mean of its divisors is an integer number (37095408).

Almost surely, 2^289223881 is an apocalyptic number.

It is an amenable number.

289223881 is a deficient number, since it is larger than the sum of its proper divisors (7539383).

289223881 is a wasteful number, since it uses less digits than its factorization.

289223881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11591.

The product of its digits is 110592, while the sum is 43.

The square root of 289223881 is about 17006.5834605308. The cubic root of 289223881 is about 661.3195828973.

The spelling of 289223881 in words is "two hundred eighty-nine million, two hundred twenty-three thousand, eight hundred eighty-one".