449519069 has 2 divisors, whose sum is σ = 449519070. Its totient is φ = 449519068.

The previous prime is 449519051. The next prime is 449519071. The reversal of 449519069 is 960915944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286624900 + 162894169 = 16930^2 + 12763^2 .

It is a cyclic number.

It is not a de Polignac number, because 449519069 - 2⁸ = 449518813 is a prime.

It is a super-2 number, since 2×449519069² = 404134786789253522, which contains 22 as substring.

Together with 449519071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449519009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224759534 + 224759535.

It is an arithmetic number, because the mean of its divisors is an integer number (224759535).

Almost surely, 2^449519069 is an apocalyptic number.

It is an amenable number.

449519069 is a deficient number, since it is larger than the sum of its proper divisors (1).

449519069 is an equidigital number, since it uses as much as digits as its factorization.

449519069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 449519069 is about 21201.8647528938. The cubic root of 449519069 is about 766.0363410373.

The spelling of 449519069 in words is "four hundred forty-nine million, five hundred nineteen thousand, sixty-nine".