449359409 has 2 divisors, whose sum is σ = 449359410. Its totient is φ = 449359408.

The previous prime is 449359357. The next prime is 449359411. The reversal of 449359409 is 904953944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304397809 + 144961600 = 17447^2 + 12040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449359409 is a prime.

Together with 449359411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (449359429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224679704 + 224679705.

It is an arithmetic number, because the mean of its divisors is an integer number (224679705).

Almost surely, 2^449359409 is an apocalyptic number.

It is an amenable number.

449359409 is a deficient number, since it is larger than the sum of its proper divisors (1).

449359409 is an equidigital number, since it uses as much as digits as its factorization.

449359409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 449359409 is about 21198.0991836532. The cubic root of 449359409 is about 765.9456368057.

The spelling of 449359409 in words is "four hundred forty-nine million, three hundred fifty-nine thousand, four hundred nine".