289894993 has 8 divisors (see below), whose sum is σ = 293906880. Its totient is φ = 285907440.

The previous prime is 289894939. The next prime is 289895017. The reversal of 289894993 is 399498982.

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 289894993 - 2¹⁷ = 289763921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289894793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18588 + ... + 30418.

It is an arithmetic number, because the mean of its divisors is an integer number (36738360).

Almost surely, 2^289894993 is an apocalyptic number.

It is an amenable number.

289894993 is a deficient number, since it is larger than the sum of its proper divisors (4011887).

289894993 is a wasteful number, since it uses less digits than its factorization.

289894993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12167.

The product of its digits is 10077696, while the sum is 61.

The square root of 289894993 is about 17026.3029751030. The cubic root of 289894993 is about 661.8306940709.

The spelling of 289894993 in words is "two hundred eighty-nine million, eight hundred ninety-four thousand, nine hundred ninety-three".