158989247 has 4 divisors (see below), whose sum is σ = 161684040. Its totient is φ = 156294456.

The previous prime is 158989231. The next prime is 158989261. The reversal of 158989247 is 742989851.

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 158989247 - 2⁴ = 158989231 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 (158989217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347308 + ... + 1347425.

It is an arithmetic number, because the mean of its divisors is an integer number (40421010).

Almost surely, 2^158989247 is an apocalyptic number.

158989247 is a deficient number, since it is larger than the sum of its proper divisors (2694793).

158989247 is an equidigital number, since it uses as much as digits as its factorization.

158989247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694792.

The product of its digits is 1451520, while the sum is 53.

The square root of 158989247 is about 12609.0938215242. The cubic root of 158989247 is about 541.7379385612.

The spelling of 158989247 in words is "one hundred fifty-eight million, nine hundred eighty-nine thousand, two hundred forty-seven".