449800261 has 2 divisors, whose sum is σ = 449800262. Its totient is φ = 449800260.

The previous prime is 449800249. The next prime is 449800277. The reversal of 449800261 is 162008944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268763236 + 181037025 = 16394^2 + 13455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449800261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449800201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224900130 + 224900131.

It is an arithmetic number, because the mean of its divisors is an integer number (224900131).

Almost surely, 2^449800261 is an apocalyptic number.

It is an amenable number.

449800261 is a deficient number, since it is larger than the sum of its proper divisors (1).

449800261 is an equidigital number, since it uses as much as digits as its factorization.

449800261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 449800261 is about 21208.4950196849. The cubic root of 449800261 is about 766.1960364443.

The spelling of 449800261 in words is "four hundred forty-nine million, eight hundred thousand, two hundred sixty-one".