988289 has 4 divisors (see below), whose sum is σ = 991956. Its totient is φ = 984624.

The previous prime is 988279. The next prime is 988297. The reversal of 988289 is 982889.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 960400 + 27889 = 980^2 + 167^2 .

It is a cyclic number.

It is not a de Polignac number, because 988289 - 2⁸ = 988033 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 (988219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394 + ... + 1979.

It is an arithmetic number, because the mean of its divisors is an integer number (247989).

2⁹⁸⁸²⁸⁹ is an apocalyptic number.

It is an amenable number.

988289 is a deficient number, since it is larger than the sum of its proper divisors (3667).

988289 is a wasteful number, since it uses less digits than its factorization.

988289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666.

The product of its digits is 82944, while the sum is 44.

The square root of 988289 is about 994.1272554356. The cubic root of 988289 is about 99.6080994795.

The spelling of 988289 in words is "nine hundred eighty-eight thousand, two hundred eighty-nine".