158589089 has 4 divisors (see below), whose sum is σ = 160159380. Its totient is φ = 157018800.

The previous prime is 158589061. The next prime is 158589097. The reversal of 158589089 is 980985851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 151486864 + 7102225 = 12308^2 + 2665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158589089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 158589089.

It is not an unprimeable number, because it can be changed into a prime (158589049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784994 + ... + 785195.

It is an arithmetic number, because the mean of its divisors is an integer number (40039845).

Almost surely, 2^158589089 is an apocalyptic number.

It is an amenable number.

158589089 is a deficient number, since it is larger than the sum of its proper divisors (1570291).

158589089 is a wasteful number, since it uses less digits than its factorization.

158589089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570290.

The product of its (nonzero) digits is 1036800, while the sum is 53.

The square root of 158589089 is about 12593.2159911597. The cubic root of 158589089 is about 541.2830589603.

The spelling of 158589089 in words is "one hundred fifty-eight million, five hundred eighty-nine thousand, eighty-nine".