805593979 has 4 divisors (see below), whose sum is σ = 811000800. Its totient is φ = 800187160.

The previous prime is 805593973. The next prime is 805593983. The reversal of 805593979 is 979395508.

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 805593979 - 2⁵ = 805593947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805593973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2703187 + ... + 2703484.

It is an arithmetic number, because the mean of its divisors is an integer number (202750200).

Almost surely, 2^805593979 is an apocalyptic number.

805593979 is a deficient number, since it is larger than the sum of its proper divisors (5406821).

805593979 is a wasteful number, since it uses less digits than its factorization.

805593979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406820.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The square root of 805593979 is about 28382.9874925104. The cubic root of 805593979 is about 930.4764887832.

The spelling of 805593979 in words is "eight hundred five million, five hundred ninety-three thousand, nine hundred seventy-nine".