449631 has 40 divisors (see below), whose sum is σ = 840224. Its totient is φ = 233280.

The previous prime is 449629. The next prime is 449653. The reversal of 449631 is 136944.

It is not a de Polignac number, because 449631 - 2¹ = 449629 is a prime.

It is a super-2 number, since 2×449631² = 404336072322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 449595 and 449604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449621) 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 39 ways as a sum of consecutive naturals, for example, 7341 + ... + 7401.

2⁴⁴⁹⁶³¹ is an apocalyptic number.

449631 is a deficient number, since it is larger than the sum of its proper divisors (390593).

449631 is a wasteful number, since it uses less digits than its factorization.

449631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 84 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 449631 is about 670.5453004831. The cubic root of 449631 is about 76.6099917204.

449631 divided by its sum of digits (27) gives a triangular number (16653 = T₁₈₂).

The spelling of 449631 in words is "four hundred forty-nine thousand, six hundred thirty-one".