449453839 has 2 divisors, whose sum is σ = 449453840. Its totient is φ = 449453838.

The previous prime is 449453819. The next prime is 449453863. The reversal of 449453839 is 938354944.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 449453839 - 2¹¹ = 449451791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 449453792 and 449453801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449453819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224726919 + 224726920.

It is an arithmetic number, because the mean of its divisors is an integer number (224726920).

Almost surely, 2^449453839 is an apocalyptic number.

449453839 is a deficient number, since it is larger than the sum of its proper divisors (1).

449453839 is an equidigital number, since it uses as much as digits as its factorization.

449453839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 49.

The square root of 449453839 is about 21200.3263889969. The cubic root of 449453839 is about 765.9992859035. Note that the first 3 decimals are identical.

It can be divided in two parts, 44945 and 3839, that added together give a palindrome (48784).

The spelling of 449453839 in words is "four hundred forty-nine million, four hundred fifty-three thousand, eight hundred thirty-nine".