449217619 has 2 divisors, whose sum is σ = 449217620. Its totient is φ = 449217618.

The previous prime is 449217617. The next prime is 449217631. The reversal of 449217619 is 916712944.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 449217619 - 2¹ = 449217617 is a prime.

It is a super-2 number, since 2×449217619² = 403592938440058322, which contains 22 as substring.

Together with 449217617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (449217617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224608809 + 224608810.

It is an arithmetic number, because the mean of its divisors is an integer number (224608810).

Almost surely, 2^449217619 is an apocalyptic number.

449217619 is a deficient number, since it is larger than the sum of its proper divisors (1).

449217619 is an equidigital number, since it uses as much as digits as its factorization.

449217619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 449217619 is about 21194.7545161533. The cubic root of 449217619 is about 765.8650666619.

The spelling of 449217619 in words is "four hundred forty-nine million, two hundred seventeen thousand, six hundred nineteen".