449843939 has 2 divisors, whose sum is σ = 449843940. Its totient is φ = 449843938.

The previous prime is 449843921. The next prime is 449843971. The reversal of 449843939 is 939348944.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449843939 is a prime.

It is not a weakly prime, because it can be changed into another prime (449848939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224921969 + 224921970.

It is an arithmetic number, because the mean of its divisors is an integer number (224921970).

Almost surely, 2^449843939 is an apocalyptic number.

449843939 is a deficient number, since it is larger than the sum of its proper divisors (1).

449843939 is an equidigital number, since it uses as much as digits as its factorization.

449843939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 53.

The square root of 449843939 is about 21209.5247235764. The cubic root of 449843939 is about 766.2208362130.

The spelling of 449843939 in words is "four hundred forty-nine million, eight hundred forty-three thousand, nine hundred thirty-nine".