439793262449 has 2 divisors, whose sum is σ = 439793262450. Its totient is φ = 439793262448.

The previous prime is 439793262443. The next prime is 439793262451. The reversal of 439793262449 is 944262397934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237534390625 + 202258871824 = 487375^2 + 449732^2 .

It is a cyclic number.

It is not a de Polignac number, because 439793262449 - 2⁸ = 439793262193 is a prime.

It is a super-2 number, since 2×439793262449² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 439793262451, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 439793262391 and 439793262400.

It is not a weakly prime, because it can be changed into another prime (439793262443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219896631224 + 219896631225.

It is an arithmetic number, because the mean of its divisors is an integer number (219896631225).

Almost surely, 2^439793262449 is an apocalyptic number.

It is an amenable number.

439793262449 is a deficient number, since it is larger than the sum of its proper divisors (1).

439793262449 is an equidigital number, since it uses as much as digits as its factorization.

439793262449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70543872, while the sum is 62.

The spelling of 439793262449 in words is "four hundred thirty-nine billion, seven hundred ninety-three million, two hundred sixty-two thousand, four hundred forty-nine".