158099959 has 4 divisors (see below), whose sum is σ = 158129104. Its totient is φ = 158070816.

The previous prime is 158099951. The next prime is 158099987. The reversal of 158099959 is 959990851.

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

It is a cyclic number.

It is not a de Polignac number, because 158099959 - 2³ = 158099951 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 (158099951) 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, 3762 + ... + 18175.

It is an arithmetic number, because the mean of its divisors is an integer number (39532276).

Almost surely, 2^158099959 is an apocalyptic number.

158099959 is a deficient number, since it is larger than the sum of its proper divisors (29145).

158099959 is an equidigital number, since it uses as much as digits as its factorization.

158099959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29144.

The product of its (nonzero) digits is 1312200, while the sum is 55.

The square root of 158099959 is about 12573.7806168232. The cubic root of 158099959 is about 540.7259999478.

The spelling of 158099959 in words is "one hundred fifty-eight million, ninety-nine thousand, nine hundred fifty-nine".