158589389 has 4 divisors (see below), whose sum is σ = 181245024. Its totient is φ = 135933756.

The previous prime is 158589373. The next prime is 158589407. The reversal of 158589389 is 983985851.

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.

It is not a de Polignac number, because 158589389 - 2⁴ = 158589373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158589359) 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, 11327807 + ... + 11327820.

It is an arithmetic number, because the mean of its divisors is an integer number (45311256).

Almost surely, 2^158589389 is an apocalyptic number.

It is an amenable number.

158589389 is a deficient number, since it is larger than the sum of its proper divisors (22655635).

158589389 is an equidigital number, since it uses as much as digits as its factorization.

158589389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22655634.

The product of its digits is 3110400, while the sum is 56.

The square root of 158589389 is about 12593.2279023291. The cubic root of 158589389 is about 541.2834002718.

The spelling of 158589389 in words is "one hundred fifty-eight million, five hundred eighty-nine thousand, three hundred eighty-nine".