289340855 has 8 divisors (see below), whose sum is σ = 347333712. Its totient is φ = 231389568.

The previous prime is 289340819. The next prime is 289340881. The reversal of 289340855 is 558043982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289340855 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7832 + ... + 25298.

It is an arithmetic number, because the mean of its divisors is an integer number (43416714).

Almost surely, 2^289340855 is an apocalyptic number.

289340855 is a deficient number, since it is larger than the sum of its proper divisors (57992857).

289340855 is a wasteful number, since it uses less digits than its factorization.

289340855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20785.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 289340855 is about 17010.0221928133. The cubic root of 289340855 is about 661.4087258018.

The spelling of 289340855 in words is "two hundred eighty-nine million, three hundred forty thousand, eight hundred fifty-five".