822273544849 has 3 divisors (see below), whose sum is σ = 822274451643. Its totient is φ = 822272638056.

The previous prime is 822273544831. The next prime is 822273544879. The reversal of 822273544849 is 948445372228.

The square root of 822273544849 is 906793.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 74449851025 + 747823693824 = 272855^2 + 864768^2 .

It is not a de Polignac number, because 822273544849 - 2⁵ = 822273544817 is a prime.

It is a super-2 number, since 2×822273544849² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 822273544793 and 822273544802.

It is not an unprimeable number, because it can be changed into a prime (822273544819) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 453397 + ... + 1360189.

It is an arithmetic number, because the mean of its divisors is an integer number (274091483881).

Almost surely, 2^822273544849 is an apocalyptic number.

822273544849 is the 906793-rd square number.

822273544849 is the 453397-th centered octagonal number.

It is an amenable number.

822273544849 is a deficient number, since it is larger than the sum of its proper divisors (906794).

822273544849 is an frugal number, since it uses more digits than its factorization.

822273544849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813586 (or 906793 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 58.

The spelling of 822273544849 in words is "eight hundred twenty-two billion, two hundred seventy-three million, five hundred forty-four thousand, eight hundred forty-nine".