158639099 has 2 divisors, whose sum is σ = 158639100. Its totient is φ = 158639098.

The previous prime is 158639081. The next prime is 158639111. The reversal of 158639099 is 990936851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158639099 - 2²⁴ = 141861883 is a prime.

It is not a weakly prime, because it can be changed into another prime (158639069) 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 as a sum of consecutive naturals, namely, 79319549 + 79319550.

It is an arithmetic number, because the mean of its divisors is an integer number (79319550).

Almost surely, 2^158639099 is an apocalyptic number.

158639099 is a deficient number, since it is larger than the sum of its proper divisors (1).

158639099 is an equidigital number, since it uses as much as digits as its factorization.

158639099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 158639099 is about 12595.2014275279. The cubic root of 158639099 is about 541.3399496351.

The spelling of 158639099 in words is "one hundred fifty-eight million, six hundred thirty-nine thousand, ninety-nine".