289538081 has 8 divisors (see below), whose sum is σ = 335089920. Its totient is φ = 245033568.

The previous prime is 289538057. The next prime is 289538083. The reversal of 289538081 is 180835982.

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 289538081 - 2¹⁰ = 289537057 is a prime.

It is a super-2 number, since 2×289538081² = 167664600698325122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (289538083) 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, 261236 + ... + 262341.

It is an arithmetic number, because the mean of its divisors is an integer number (41886240).

Almost surely, 2^289538081 is an apocalyptic number.

It is an amenable number.

289538081 is a deficient number, since it is larger than the sum of its proper divisors (45551839).

289538081 is an equidigital number, since it uses as much as digits as its factorization.

289538081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523663.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 289538081 is about 17015.8185521590. The cubic root of 289538081 is about 661.5589723214.

The spelling of 289538081 in words is "two hundred eighty-nine million, five hundred thirty-eight thousand, eighty-one".