989123 has 2 divisors, whose sum is σ = 989124. Its totient is φ = 989122.

The previous prime is 989119. The next prime is 989171. The reversal of 989123 is 321989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989123 - 2² = 989119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 989123.

It is not a weakly prime, because it can be changed into another prime (989173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494561 + 494562.

It is an arithmetic number, because the mean of its divisors is an integer number (494562).

2⁹⁸⁹¹²³ is an apocalyptic number.

989123 is a deficient number, since it is larger than the sum of its proper divisors (1).

989123 is an equidigital number, since it uses as much as digits as its factorization.

989123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 989123 is about 994.5466303799. The cubic root of 989123 is about 99.6361107859.

The spelling of 989123 in words is "nine hundred eighty-nine thousand, one hundred twenty-three".