449428 has 18 divisors (see below), whose sum is σ = 915306. Its totient is φ = 192528.

The previous prime is 449419. The next prime is 449437. The reversal of 449428 is 824944.

It is an interprime number because it is at equal distance from previous prime (449419) and next prime (449437).

It can be written as a sum of positive squares in only one way, i.e., 345744 + 103684 = 588^2 + 322^2 .

It is a super-3 number, since 3×449428³ = 272333854533752256, which contains 333 as substring.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 449428.

It is a congruent number.

It is an unprimeable number.

449428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 951 + ... + 1342.

2⁴⁴⁹⁴²⁸ is an apocalyptic number.

It is an amenable number.

449428 is an abundant number, since it is smaller than the sum of its proper divisors (465878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449428 is a wasteful number, since it uses less digits than its factorization.

449428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311 (or 2302 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 449428 is about 670.3939140535. The cubic root of 449428 is about 76.5984606580.

The spelling of 449428 in words is "four hundred forty-nine thousand, four hundred twenty-eight".