797859005 has 4 divisors (see below), whose sum is σ = 957430812. Its totient is φ = 638287200.

The previous prime is 797858953. The next prime is 797859017. The reversal of 797859005 is 500958797.

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

It can be written as a sum of positive squares in 2 ways, for example, as 590441401 + 207417604 = 24299^2 + 14402^2 .

It is not a de Polignac number, because 797859005 - 2¹⁰ = 797857981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 79785896 + ... + 79785905.

It is an arithmetic number, because the mean of its divisors is an integer number (239357703).

Almost surely, 2^797859005 is an apocalyptic number.

It is an amenable number.

797859005 is a deficient number, since it is larger than the sum of its proper divisors (159571807).

797859005 is a wasteful number, since it uses less digits than its factorization.

797859005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159571806.

The product of its (nonzero) digits is 793800, while the sum is 50.

The square root of 797859005 is about 28246.3980889599. The cubic root of 797859005 is about 927.4888919849.

The spelling of 797859005 in words is "seven hundred ninety-seven million, eight hundred fifty-nine thousand, five".