2247279822649 has 9 divisors (see below), whose sum is σ = 2254868213997. Its totient is φ = 2239716898464.

The previous prime is 2247279822629. The next prime is 2247279822661. The reversal of 2247279822649 is 9462289727422.

The square root of 2247279822649 is 1499093.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1933531965225 + 313747857424 = 1390515^2 + 560132^2 .

It is not a de Polignac number, because 2247279822649 - 2¹⁹ = 2247279298361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2247279822629) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 475210117 + ... + 475214845.

Almost surely, 2^{2247279822649} is an apocalyptic number.

2247279822649 is the 1499093-rd square number.

2247279822649 is the 749547-th centered octagonal number.

It is an amenable number.

2247279822649 is a deficient number, since it is larger than the sum of its proper divisors (7588391348).

2247279822649 is an frugal number, since it uses more digits than its factorization.

2247279822649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10092 (or 5046 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 64.

Multiplying 2247279822649 by its sum of digits (64), we get a square (143825908649536 = 11992744²).

The spelling of 2247279822649 in words is "two trillion, two hundred forty-seven billion, two hundred seventy-nine million, eight hundred twenty-two thousand, six hundred forty-nine".