449494949 has 4 divisors (see below), whose sum is σ = 450008364. Its totient is φ = 448981536.

The previous prime is 449494921. The next prime is 449494967. The reversal of 449494949 is 949494944.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 180042724 + 269452225 = 13418^2 + 16415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449494949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 449494894 and 449494903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449494919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255392 + ... + 257145.

It is an arithmetic number, because the mean of its divisors is an integer number (112502091).

Almost surely, 2^449494949 is an apocalyptic number.

It is an amenable number.

449494949 is a deficient number, since it is larger than the sum of its proper divisors (513415).

449494949 is an equidigital number, since it uses as much as digits as its factorization.

449494949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513414.

The product of its digits is 6718464, while the sum is 56.

The square root of 449494949 is about 21201.2959273720. The cubic root of 449494949 is about 766.0226396334.

The spelling of 449494949 in words is "four hundred forty-nine million, four hundred ninety-four thousand, nine hundred forty-nine".