289084489 has 4 divisors (see below), whose sum is σ = 290381056. Its totient is φ = 287787924.

The previous prime is 289084457. The next prime is 289084519. The reversal of 289084489 is 984480982.

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 a cyclic number.

It is not a de Polignac number, because 289084489 - 2⁵ = 289084457 is a prime.

It is a super-2 number, since 2×289084489² = 167139683560782242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289084409) 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, 647949 + ... + 648394.

It is an arithmetic number, because the mean of its divisors is an integer number (72595264).

Almost surely, 2^289084489 is an apocalyptic number.

It is an amenable number.

289084489 is a deficient number, since it is larger than the sum of its proper divisors (1296567).

289084489 is a wasteful number, since it uses less digits than its factorization.

289084489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296566.

The product of its (nonzero) digits is 1327104, while the sum is 52.

The square root of 289084489 is about 17002.4847889948. The cubic root of 289084489 is about 661.2133244143.

The spelling of 289084489 in words is "two hundred eighty-nine million, eighty-four thousand, four hundred eighty-nine".