989154 has 24 divisors (see below), whose sum is σ = 2162160. Its totient is φ = 326808.

The previous prime is 989123. The next prime is 989171. The reversal of 989154 is 451989.

It is an unprimeable number.

989154 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3069 + ... + 3375.

It is an arithmetic number, because the mean of its divisors is an integer number (90090).

2⁹⁸⁹¹⁵⁴ is an apocalyptic number.

989154 is an abundant number, since it is smaller than the sum of its proper divisors (1173006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

989154 is a wasteful number, since it uses less digits than its factorization.

989154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 491 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 989154 is about 994.5622152485. The cubic root of 989154 is about 99.6371516700.

The spelling of 989154 in words is "nine hundred eighty-nine thousand, one hundred fifty-four".