449309893 has 8 divisors (see below), whose sum is σ = 456710400. Its totient is φ = 441952368.

The previous prime is 449309873. The next prime is 449309897. The reversal of 449309893 is 398903944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 449309893 - 2¹³ = 449301701 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 (449309897) 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 7 ways as a sum of consecutive naturals, for example, 10680 + ... + 31822.

It is an arithmetic number, because the mean of its divisors is an integer number (57088800).

Almost surely, 2^449309893 is an apocalyptic number.

It is an amenable number.

449309893 is a deficient number, since it is larger than the sum of its proper divisors (7400507).

449309893 is a wasteful number, since it uses less digits than its factorization.

449309893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21491.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 449309893 is about 21196.9312165700. The cubic root of 449309893 is about 765.9175019716.

The spelling of 449309893 in words is "four hundred forty-nine million, three hundred nine thousand, eight hundred ninety-three".