449680957 has 16 divisors (see below), whose sum is σ = 522936000. Its totient is φ = 382147840.

The previous prime is 449680951. The next prime is 449680997. The reversal of 449680957 is 759086944.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449680957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449680951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19794 + ... + 35932.

It is an arithmetic number, because the mean of its divisors is an integer number (32683500).

Almost surely, 2^449680957 is an apocalyptic number.

It is an amenable number.

449680957 is a deficient number, since it is larger than the sum of its proper divisors (73255043).

449680957 is a wasteful number, since it uses less digits than its factorization.

449680957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16316.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 449680957 is about 21205.6821866216. The cubic root of 449680957 is about 766.1282890885.

The spelling of 449680957 in words is "four hundred forty-nine million, six hundred eighty thousand, nine hundred fifty-seven".