449008561 has 2 divisors, whose sum is σ = 449008562. Its totient is φ = 449008560.

The previous prime is 449008543. The next prime is 449008597. The reversal of 449008561 is 165800944.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425184400 + 23824161 = 20620^2 + 4881^2 .

It is a cyclic number.

It is not a de Polignac number, because 449008561 - 2²³ = 440619953 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 449008561.

It is not a weakly prime, because it can be changed into another prime (449008541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224504280 + 224504281.

It is an arithmetic number, because the mean of its divisors is an integer number (224504281).

Almost surely, 2^449008561 is an apocalyptic number.

It is an amenable number.

449008561 is a deficient number, since it is larger than the sum of its proper divisors (1).

449008561 is an equidigital number, since it uses as much as digits as its factorization.

449008561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 449008561 is about 21189.8221087389. The cubic root of 449008561 is about 765.7462415043.

The spelling of 449008561 in words is "four hundred forty-nine million, eight thousand, five hundred sixty-one".