158869 has 4 divisors (see below), whose sum is σ = 160960. Its totient is φ = 156780.

The previous prime is 158867. The next prime is 158881. The reversal of 158869 is 968851.

158869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 968851 = 13 ⋅74527.

It is a cyclic number.

It is not a de Polignac number, because 158869 - 2¹ = 158867 is a prime.

It is a super-2 number, since 2×158869² = 50478718322, which contains 22 as substring.

It is a Duffinian number.

158869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158863) 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, 927 + ... + 1084.

It is an arithmetic number, because the mean of its divisors is an integer number (40240).

2¹⁵⁸⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

158869 is a deficient number, since it is larger than the sum of its proper divisors (2091).

158869 is an equidigital number, since it uses as much as digits as its factorization.

158869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090.

The product of its digits is 17280, while the sum is 37.

The square root of 158869 is about 398.5837427693. The cubic root of 158869 is about 54.1601328082.

The spelling of 158869 in words is "one hundred fifty-eight thousand, eight hundred sixty-nine".