289133385 has 8 divisors (see below), whose sum is σ = 462613440. Its totient is φ = 154204464.

The previous prime is 289133359. The next prime is 289133401. The reversal of 289133385 is 583331982.

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

It is not a de Polignac number, because 289133385 - 2⁸ = 289133129 is a prime.

It is a super-2 number, since 2×289133385² = 167196228643116450, which contains 22 as substring.

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, 9637765 + ... + 9637794.

It is an arithmetic number, because the mean of its divisors is an integer number (57826680).

Almost surely, 2^289133385 is an apocalyptic number.

It is an amenable number.

289133385 is a deficient number, since it is larger than the sum of its proper divisors (173480055).

289133385 is a wasteful number, since it uses less digits than its factorization.

289133385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19275567.

The product of its digits is 155520, while the sum is 42.

The square root of 289133385 is about 17003.9226356744. The cubic root of 289133385 is about 661.2506017102.

The spelling of 289133385 in words is "two hundred eighty-nine million, one hundred thirty-three thousand, three hundred eighty-five".