989255 has 8 divisors (see below), whose sum is σ = 1205232. Its totient is φ = 779328.

The previous prime is 989251. The next prime is 989279. The reversal of 989255 is 552989.

It is a happy number.

989255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 989255 - 2² = 989251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 989255.

It is not an unprimeable number, because it can be changed into a prime (989251) 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, 1142 + ... + 1811.

It is an arithmetic number, because the mean of its divisors is an integer number (150654).

2⁹⁸⁹²⁵⁵ is an apocalyptic number.

989255 is a deficient number, since it is larger than the sum of its proper divisors (215977).

989255 is a wasteful number, since it uses less digits than its factorization.

989255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025.

The product of its digits is 32400, while the sum is 38.

The square root of 989255 is about 994.6129900620. The cubic root of 989255 is about 99.6405427866.

The spelling of 989255 in words is "nine hundred eighty-nine thousand, two hundred fifty-five".