289089391 has 8 divisors (see below), whose sum is σ = 293346144. Its totient is φ = 284858880.

The previous prime is 289089373. The next prime is 289089407. The reversal of 289089391 is 193980982.

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 289089391 - 2⁷ = 289089263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289089341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16206 + ... + 28996.

It is an arithmetic number, because the mean of its divisors is an integer number (36668268).

Almost surely, 2^289089391 is an apocalyptic number.

289089391 is a deficient number, since it is larger than the sum of its proper divisors (4256753).

289089391 is a wasteful number, since it uses less digits than its factorization.

289089391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13121.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 289089391 is about 17002.6289437840. The cubic root of 289089391 is about 661.2170617870.

The spelling of 289089391 in words is "two hundred eighty-nine million, eighty-nine thousand, three hundred ninety-one".