158799089 has 2 divisors, whose sum is σ = 158799090. Its totient is φ = 158799088.

The previous prime is 158799073. The next prime is 158799133. The reversal of 158799089 is 980997851.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152942689 + 5856400 = 12367^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 158799089 - 2⁴ = 158799073 is a prime.

It is not a weakly prime, because it can be changed into another prime (158729089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79399544 + 79399545.

It is an arithmetic number, because the mean of its divisors is an integer number (79399545).

Almost surely, 2^158799089 is an apocalyptic number.

It is an amenable number.

158799089 is a deficient number, since it is larger than the sum of its proper divisors (1).

158799089 is an equidigital number, since it uses as much as digits as its factorization.

158799089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The square root of 158799089 is about 12601.5510553265. The cubic root of 158799089 is about 541.5218717462.

The spelling of 158799089 in words is "one hundred fifty-eight million, seven hundred ninety-nine thousand, eighty-nine".