289430089 has 16 divisors (see below), whose sum is σ = 319253760. Its totient is φ = 260720640.

The previous prime is 289430051. The next prime is 289430093. The reversal of 289430089 is 980034982.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 289430089 - 2⁷ = 289429961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289430039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391282 + ... + 392020.

It is an arithmetic number, because the mean of its divisors is an integer number (19953360).

Almost surely, 2^289430089 is an apocalyptic number.

It is an amenable number.

289430089 is a deficient number, since it is larger than the sum of its proper divisors (29823671).

289430089 is a wasteful number, since it uses less digits than its factorization.

289430089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 289430089 is about 17012.6449736659. The cubic root of 289430089 is about 661.4767126057.

The spelling of 289430089 in words is "two hundred eighty-nine million, four hundred thirty thousand, eighty-nine".