449186091 has 4 divisors (see below), whose sum is σ = 598914792. Its totient is φ = 299457392.

The previous prime is 449186083. The next prime is 449186093. The reversal of 449186091 is 190681944.

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

It is a cyclic number.

It is not a de Polignac number, because 449186091 - 2³ = 449186083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (449186093) 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 3 ways as a sum of consecutive naturals, for example, 74864346 + ... + 74864351.

It is an arithmetic number, because the mean of its divisors is an integer number (149728698).

Almost surely, 2^449186091 is an apocalyptic number.

449186091 is a deficient number, since it is larger than the sum of its proper divisors (149728701).

449186091 is a wasteful number, since it uses less digits than its factorization.

449186091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149728700.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 449186091 is about 21194.0107341673. The cubic root of 449186091 is about 765.8471490219.

The spelling of 449186091 in words is "four hundred forty-nine million, one hundred eighty-six thousand, ninety-one".