822215469349 has 4 divisors (see below), whose sum is σ = 822360922636. Its totient is φ = 822070016064.

The previous prime is 822215469323. The next prime is 822215469377. The reversal of 822215469349 is 943964512228.

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 604926172900 + 217289296449 = 777770^2 + 466143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-822215469349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 822215469349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822215469319) 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, 72718164 + ... + 72729469.

It is an arithmetic number, because the mean of its divisors is an integer number (205590230659).

Almost surely, 2^822215469349 is an apocalyptic number.

It is an amenable number.

822215469349 is a deficient number, since it is larger than the sum of its proper divisors (145453287).

822215469349 is a wasteful number, since it uses less digits than its factorization.

822215469349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145453286.

The product of its digits is 7464960, while the sum is 55.

The spelling of 822215469349 in words is "eight hundred twenty-two billion, two hundred fifteen million, four hundred sixty-nine thousand, three hundred forty-nine".