289115 has 8 divisors (see below), whose sum is σ = 353808. Its totient is φ = 226720.

The previous prime is 289111. The next prime is 289127. The reversal of 289115 is 511982.

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 289115 - 2² = 289111 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (289111) 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, 281 + ... + 810.

It is an arithmetic number, because the mean of its divisors is an integer number (44226).

2²⁸⁹¹¹⁵ is an apocalyptic number.

289115 is a deficient number, since it is larger than the sum of its proper divisors (64693).

289115 is a wasteful number, since it uses less digits than its factorization.

289115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149.

The product of its digits is 720, while the sum is 26.

The square root of 289115 is about 537.6941509818. The cubic root of 289115 is about 66.1236585861.

It can be divided in two parts, 2891 and 15, that multiplied together give a triangular number (43365 = T₂₉₄).

The spelling of 289115 in words is "two hundred eighty-nine thousand, one hundred fifteen".