449204820 has 24 divisors (see below), whose sum is σ = 1257773664. Its totient is φ = 119787936.

The previous prime is 449204813. The next prime is 449204837. The reversal of 449204820 is 28402944.

It is a super-2 number, since 2×449204820² = 403569940622464800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3743314 + ... + 3743433.

It is an arithmetic number, because the mean of its divisors is an integer number (52407236).

Almost surely, 2^449204820 is an apocalyptic number.

It is an amenable number.

449204820 is an abundant number, since it is smaller than the sum of its proper divisors (808568844).

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

449204820 is a wasteful number, since it uses less digits than its factorization.

449204820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7486759 (or 7486757 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 449204820 is about 21194.4525760870. The cubic root of 449204820 is about 765.8577929786.

The spelling of 449204820 in words is "four hundred forty-nine million, two hundred four thousand, eight hundred twenty".