449424040 has 32 divisors (see below), whose sum is σ = 1088990280. Its totient is φ = 165940992.

The previous prime is 449424037. The next prime is 449424067. The reversal of 449424040 is 40424944.

It can be written as a sum of positive squares in 4 ways, for example, as 183277444 + 266146596 = 13538^2 + 16314^2 .

It is a junction number, because it is equal to n+sod(n) for n = 449423993 and 449424011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431619 + ... + 432658.

Almost surely, 2^449424040 is an apocalyptic number.

449424040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

449424040 is an abundant number, since it is smaller than the sum of its proper divisors (639566240).

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

449424040 is a wasteful number, since it uses less digits than its factorization.

449424040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864301 (or 864297 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 449424040 is about 21199.6235815639. The cubic root of 449424040 is about 765.9823568256.

Adding to 449424040 its reverse (40424944), we get a palindrome (489848984).

The spelling of 449424040 in words is "four hundred forty-nine million, four hundred twenty-four thousand, forty".