289438086 has 16 divisors (see below), whose sum is σ = 661572864. Its totient is φ = 82696584.

The previous prime is 289438069. The next prime is 289438109. The reversal of 289438086 is 680834982.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3445650 + ... + 3445733.

It is an arithmetic number, because the mean of its divisors is an integer number (41348304).

Almost surely, 2^289438086 is an apocalyptic number.

289438086 is an abundant number, since it is smaller than the sum of its proper divisors (372134778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289438086 is a wasteful number, since it uses less digits than its factorization.

289438086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6891395.

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 289438086 is about 17012.8800031035. The cubic root of 289438086 is about 661.4828047856.

The spelling of 289438086 in words is "two hundred eighty-nine million, four hundred thirty-eight thousand, eighty-six".