449566669 has 4 divisors (see below), whose sum is σ = 449626144. Its totient is φ = 449507196.

The previous prime is 449566661. The next prime is 449566699. The reversal of 449566669 is 966665944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449566669 - 2³ = 449566661 is a prime.

It is a super-2 number, since 2×449566669² = 404220379751511122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449566661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16407 + ... + 34180.

It is an arithmetic number, because the mean of its divisors is an integer number (112406536).

Almost surely, 2^449566669 is an apocalyptic number.

It is an amenable number.

449566669 is a deficient number, since it is larger than the sum of its proper divisors (59475).

449566669 is an equidigital number, since it uses as much as digits as its factorization.

449566669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59474.

The product of its digits is 8398080, while the sum is 55.

The square root of 449566669 is about 21202.9872659491. The cubic root of 449566669 is about 766.0633788542.

The spelling of 449566669 in words is "four hundred forty-nine million, five hundred sixty-six thousand, six hundred sixty-nine".