158234989 has 4 divisors (see below), whose sum is σ = 172620000. Its totient is φ = 143849980.

The previous prime is 158234987. The next prime is 158235029. The reversal of 158234989 is 989432851.

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 a cyclic number.

It is not a de Polignac number, because 158234989 - 2¹ = 158234987 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158234981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7192489 + ... + 7192510.

It is an arithmetic number, because the mean of its divisors is an integer number (43155000).

Almost surely, 2^158234989 is an apocalyptic number.

It is an amenable number.

158234989 is a deficient number, since it is larger than the sum of its proper divisors (14385011).

158234989 is a wasteful number, since it uses less digits than its factorization.

158234989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14385010.

The product of its digits is 622080, while the sum is 49.

The square root of 158234989 is about 12579.1489775740. The cubic root of 158234989 is about 540.8798972151.

The spelling of 158234989 in words is "one hundred fifty-eight million, two hundred thirty-four thousand, nine hundred eighty-nine".