449719561 has 2 divisors, whose sum is σ = 449719562. Its totient is φ = 449719560.

The previous prime is 449719553. The next prime is 449719583. The reversal of 449719561 is 165917944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315275536 + 134444025 = 17756^2 + 11595^2 .

It is a cyclic number.

It is not a de Polignac number, because 449719561 - 2³ = 449719553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (449719541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224859780 + 224859781.

It is an arithmetic number, because the mean of its divisors is an integer number (224859781).

Almost surely, 2^449719561 is an apocalyptic number.

It is an amenable number.

449719561 is a deficient number, since it is larger than the sum of its proper divisors (1).

449719561 is an equidigital number, since it uses as much as digits as its factorization.

449719561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 449719561 is about 21206.5923948191. The cubic root of 449719561 is about 766.1502118686.

The spelling of 449719561 in words is "four hundred forty-nine million, seven hundred nineteen thousand, five hundred sixty-one".