158022399 has 4 divisors (see below), whose sum is σ = 210696536. Its totient is φ = 105348264.

The previous prime is 158022383. The next prime is 158022439. The reversal of 158022399 is 993220851.

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

It is not a de Polignac number, because 158022399 - 2⁴ = 158022383 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 (158022329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26337064 + ... + 26337069.

It is an arithmetic number, because the mean of its divisors is an integer number (52674134).

Almost surely, 2^158022399 is an apocalyptic number.

158022399 is a deficient number, since it is larger than the sum of its proper divisors (52674137).

158022399 is an equidigital number, since it uses as much as digits as its factorization.

158022399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52674136.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 158022399 is about 12570.6960427814. The cubic root of 158022399 is about 540.6375631371.

The spelling of 158022399 in words is "one hundred fifty-eight million, twenty-two thousand, three hundred ninety-nine".