449643 has 8 divisors (see below), whose sum is σ = 608256. Its totient is φ = 295400.

The previous prime is 449629. The next prime is 449653. The reversal of 449643 is 346944.

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 449643 - 2⁹ = 449131 is a prime.

449643 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 449643.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843 + ... + 1268.

It is an arithmetic number, because the mean of its divisors is an integer number (76032).

2⁴⁴⁹⁶⁴³ is an apocalyptic number.

449643 is a deficient number, since it is larger than the sum of its proper divisors (158613).

449643 is a wasteful number, since it uses less digits than its factorization.

449643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185.

The product of its digits is 10368, while the sum is 30.

The square root of 449643 is about 670.5542483647. The cubic root of 449643 is about 76.6106732509.

The spelling of 449643 in words is "four hundred forty-nine thousand, six hundred forty-three".