502478246449 has 3 divisors (see below), whose sum is σ = 502478955307. Its totient is φ = 502477537592.

The previous prime is 502478246447. The next prime is 502478246477. The reversal of 502478246449 is 944642874205.

The square root of 502478246449 is 708857.

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., 25505687025 + 476972559424 = 159705^2 + 690632^2 .

It is not a de Polignac number, because 502478246449 - 2¹ = 502478246447 is a prime.

It is a super-2 number, since 2×502478246449² (a number of 24 digits) contains 22 as substring.

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 502478246449.

It is not an unprimeable number, because it can be changed into a prime (502478246447) 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 2 ways as a sum of consecutive naturals, for example, 354429 + ... + 1063285.

Almost surely, 2^502478246449 is an apocalyptic number.

502478246449 is the 708857-th square number.

502478246449 is the 354429-th centered octagonal number.

It is an amenable number.

502478246449 is a deficient number, since it is larger than the sum of its proper divisors (708858).

502478246449 is an frugal number, since it uses more digits than its factorization.

502478246449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417714 (or 708857 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 55.

The spelling of 502478246449 in words is "five hundred two billion, four hundred seventy-eight million, two hundred forty-six thousand, four hundred forty-nine".