449213220 has 72 divisors (see below), whose sum is σ = 1395870840. Its totient is φ = 116866560.

The previous prime is 449213201. The next prime is 449213231. The reversal of 449213220 is 22312944.

449213220 is a `hidden beast` number, since 449 + 213 + 2 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12236004 + 436977216 = 3498^2 + 20904^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23055 + ... + 37814.

It is an arithmetic number, because the mean of its divisors is an integer number (19387095).

Almost surely, 2^449213220 is an apocalyptic number.

It is an amenable number.

449213220 is an abundant number, since it is smaller than the sum of its proper divisors (946657620).

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

449213220 is a wasteful number, since it uses less digits than its factorization.

449213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60925 (or 60920 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 449213220 is about 21194.6507402222. The cubic root of 449213220 is about 765.8625667218.

The spelling of 449213220 in words is "four hundred forty-nine million, two hundred thirteen thousand, two hundred twenty".