289398893 has 8 divisors (see below), whose sum is σ = 331569600. Its totient is φ = 247435200.

The previous prime is 289398887. The next prime is 289398943. The reversal of 289398893 is 398893982.

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-289398893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289398833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48743 + ... + 54356.

It is an arithmetic number, because the mean of its divisors is an integer number (41446200).

Almost surely, 2^289398893 is an apocalyptic number.

It is an amenable number.

289398893 is a deficient number, since it is larger than the sum of its proper divisors (42170707).

289398893 is a wasteful number, since it uses less digits than its factorization.

289398893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103507.

The product of its digits is 6718464, while the sum is 59.

The square root of 289398893 is about 17011.7281015187. The cubic root of 289398893 is about 661.4529461652.

The spelling of 289398893 in words is "two hundred eighty-nine million, three hundred ninety-eight thousand, eight hundred ninety-three".