289093887 has 8 divisors (see below), whose sum is σ = 428287280. Its totient is φ = 192729240.

The previous prime is 289093793. The next prime is 289093901. The reversal of 289093887 is 788390982.

It is not a de Polignac number, because 289093887 - 2¹⁰ = 289092863 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 (289093787) 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, 5353564 + ... + 5353617.

It is an arithmetic number, because the mean of its divisors is an integer number (53535910).

Almost surely, 2^289093887 is an apocalyptic number.

289093887 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

289093887 is a deficient number, since it is larger than the sum of its proper divisors (139193393).

289093887 is a wasteful number, since it uses less digits than its factorization.

289093887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10707190 (or 10707184 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 289093887 is about 17002.7611581178. The cubic root of 289093887 is about 661.2204895808.

The spelling of 289093887 in words is "two hundred eighty-nine million, ninety-three thousand, eight hundred eighty-seven".