449947439 has 2 divisors, whose sum is σ = 449947440. Its totient is φ = 449947438.

The previous prime is 449947397. The next prime is 449947447. The reversal of 449947439 is 934749944.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 449947439 - 2¹² = 449943343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449947469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224973719 + 224973720.

It is an arithmetic number, because the mean of its divisors is an integer number (224973720).

Almost surely, 2^449947439 is an apocalyptic number.

449947439 is a deficient number, since it is larger than the sum of its proper divisors (1).

449947439 is an equidigital number, since it uses as much as digits as its factorization.

449947439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 53.

The square root of 449947439 is about 21211.9645247676. The cubic root of 449947439 is about 766.2795956837.

The spelling of 449947439 in words is "four hundred forty-nine million, nine hundred forty-seven thousand, four hundred thirty-nine".