806158879 has 4 divisors (see below), whose sum is σ = 806661520. Its totient is φ = 805656240.

The previous prime is 806158841. The next prime is 806158891. The reversal of 806158879 is 978851608.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806158879 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 (806158079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248907 + ... + 252124.

It is an arithmetic number, because the mean of its divisors is an integer number (201665380).

Almost surely, 2^806158879 is an apocalyptic number.

806158879 is a deficient number, since it is larger than the sum of its proper divisors (502641).

806158879 is a wasteful number, since it uses less digits than its factorization.

806158879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502640.

The product of its (nonzero) digits is 967680, while the sum is 52.

The square root of 806158879 is about 28392.9371323222. The cubic root of 806158879 is about 930.6939280764.

The spelling of 806158879 in words is "eight hundred six million, one hundred fifty-eight thousand, eight hundred seventy-nine".