158489 has 2 divisors, whose sum is σ = 158490. Its totient is φ = 158488.
The previous prime is 158449. The next prime is 158507. The reversal of 158489 is 984851.
158489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 80089 + 78400 = 283^2 + 280^2 .
It is a cyclic number.
It is not a de Polignac number, because 158489 - 28 = 158233 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (158419) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79244 + 79245.
It is an arithmetic number, because the mean of its divisors is an integer number (79245).
2158489 is an apocalyptic number.
It is an amenable number.
158489 is a deficient number, since it is larger than the sum of its proper divisors (1).
158489 is an equidigital number, since it uses as much as digits as its factorization.
158489 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 11520, while the sum is 35.
The square root of 158489 is about 398.1067695983. The cubic root of 158489 is about 54.1169163186.
The spelling of 158489 in words is "one hundred fifty-eight thousand, four hundred eighty-nine".
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