798479212609 has 4 divisors (see below), whose sum is σ = 859900690516. Its totient is φ = 737057734704.

The previous prime is 798479212511. The next prime is 798479212651. The reversal of 798479212609 is 906212974897.

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 524639462400 + 273839750209 = 724320^2 + 523297^2 .

It is a cyclic number.

It is not a de Polignac number, because 798479212609 - 2³¹ = 796331728961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798479212009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30710738934 + ... + 30710738959.

It is an arithmetic number, because the mean of its divisors is an integer number (214975172629).

Almost surely, 2^798479212609 is an apocalyptic number.

It is an amenable number.

798479212609 is a deficient number, since it is larger than the sum of its proper divisors (61421477907).

798479212609 is a wasteful number, since it uses less digits than its factorization.

798479212609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61421477906.

The product of its (nonzero) digits is 27433728, while the sum is 64.

The spelling of 798479212609 in words is "seven hundred ninety-eight billion, four hundred seventy-nine million, two hundred twelve thousand, six hundred nine".