449555969 has 2 divisors, whose sum is σ = 449555970. Its totient is φ = 449555968.

The previous prime is 449555959. The next prime is 449555983. The reversal of 449555969 is 969555944.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394618225 + 54937744 = 19865^2 + 7412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449555969 is a prime.

It is a super-2 number, since 2×449555969² = 404201138527057922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (449555959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224777984 + 224777985.

It is an arithmetic number, because the mean of its divisors is an integer number (224777985).

Almost surely, 2^449555969 is an apocalyptic number.

It is an amenable number.

449555969 is a deficient number, since it is larger than the sum of its proper divisors (1).

449555969 is an equidigital number, since it uses as much as digits as its factorization.

449555969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748000, while the sum is 56.

The square root of 449555969 is about 21202.7349415117. The cubic root of 449555969 is about 766.0573011919.

The spelling of 449555969 in words is "four hundred forty-nine million, five hundred fifty-five thousand, nine hundred sixty-nine".