449669 has 4 divisors (see below), whose sum is σ = 490560. Its totient is φ = 408780.

The previous prime is 449663. The next prime is 449671. The reversal of 449669 is 966944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449669 - 2⁴ = 449653 is a prime.

It is a super-2 number, since 2×449669² = 404404419122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20429 + ... + 20450.

It is an arithmetic number, because the mean of its divisors is an integer number (122640).

2⁴⁴⁹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

449669 is a deficient number, since it is larger than the sum of its proper divisors (40891).

449669 is a wasteful number, since it uses less digits than its factorization.

449669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40890.

The product of its digits is 46656, while the sum is 38.

The square root of 449669 is about 670.5736350320. The cubic root of 449669 is about 76.6121498587.

The spelling of 449669 in words is "four hundred forty-nine thousand, six hundred sixty-nine".