449620191 has 6 divisors (see below), whose sum is σ = 649451400. Its totient is φ = 299746788.

The previous prime is 449620181. The next prime is 449620229. The reversal of 449620191 is 191026944.

It is a happy number.

449620191 is a `hidden beast` number, since 449 + 6 + 20 + 191 = 666.

It is not a de Polignac number, because 449620191 - 2¹⁴ = 449603807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449620181) 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 5 ways as a sum of consecutive naturals, for example, 24978891 + ... + 24978908.

It is an arithmetic number, because the mean of its divisors is an integer number (108241900).

Almost surely, 2^449620191 is an apocalyptic number.

449620191 is a deficient number, since it is larger than the sum of its proper divisors (199831209).

449620191 is a wasteful number, since it uses less digits than its factorization.

449620191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49957805 (or 49957802 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 449620191 is about 21204.2493618614. The cubic root of 449620191 is about 766.0937782143.

The spelling of 449620191 in words is "four hundred forty-nine million, six hundred twenty thousand, one hundred ninety-one".