449366661 has 12 divisors (see below), whose sum is σ = 687266892. Its totient is φ = 281955456.

The previous prime is 449366657. The next prime is 449366677. The reversal of 449366661 is 166663944.

It can be written as a sum of positive squares in 2 ways, for example, as 262634436 + 186732225 = 16206^2 + 13665^2 .

It is not a de Polignac number, because 449366661 - 2² = 449366657 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449366651) 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 in 11 ways as a sum of consecutive naturals, for example, 1468366 + ... + 1468671.

It is an arithmetic number, because the mean of its divisors is an integer number (57272241).

Almost surely, 2^449366661 is an apocalyptic number.

It is an amenable number.

449366661 is a deficient number, since it is larger than the sum of its proper divisors (237900231).

449366661 is a wasteful number, since it uses less digits than its factorization.

449366661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2937060 (or 2937057 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 449366661 is about 21198.2702360358. The cubic root of 449366661 is about 765.9497571956.

The spelling of 449366661 in words is "four hundred forty-nine million, three hundred sixty-six thousand, six hundred sixty-one".