449147609 has 2 divisors, whose sum is σ = 449147610. Its totient is φ = 449147608.

The previous prime is 449147591. The next prime is 449147653. The reversal of 449147609 is 906741944.

It is an a-pointer prime, because the next prime (449147653) can be obtained adding 449147609 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429318400 + 19829209 = 20720^2 + 4453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449147609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 449147609.

It is not a weakly prime, because it can be changed into another prime (449147009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224573804 + 224573805.

It is an arithmetic number, because the mean of its divisors is an integer number (224573805).

Almost surely, 2^449147609 is an apocalyptic number.

It is an amenable number.

449147609 is a deficient number, since it is larger than the sum of its proper divisors (1).

449147609 is an equidigital number, since it uses as much as digits as its factorization.

449147609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 449147609 is about 21193.1028639036. The cubic root of 449147609 is about 765.8252782262.

The spelling of 449147609 in words is "four hundred forty-nine million, one hundred forty-seven thousand, six hundred nine".