8158147 has 4 divisors (see below), whose sum is σ = 8638056. Its totient is φ = 7678240.

The previous prime is 8158133. The next prime is 8158187. The reversal of 8158147 is 7418518.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7418518 = 2 ⋅3709259.

It is a cyclic number.

It is not a de Polignac number, because 8158147 - 2¹⁹ = 7633859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8158127) 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, 239929 + ... + 239962.

It is an arithmetic number, because the mean of its divisors is an integer number (2159514).

Almost surely, 2^8158147 is an apocalyptic number.

8158147 is a deficient number, since it is larger than the sum of its proper divisors (479909).

8158147 is a wasteful number, since it uses less digits than its factorization.

8158147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479908.

The product of its digits is 8960, while the sum is 34.

The square root of 8158147 is about 2856.2470131275. The cubic root of 8158147 is about 201.3093016090.

The spelling of 8158147 in words is "eight million, one hundred fifty-eight thousand, one hundred forty-seven".