449492221 has 4 divisors (see below), whose sum is σ = 450250812. Its totient is φ = 448733632.

The previous prime is 449492203. The next prime is 449492237. The reversal of 449492221 is 122294944.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286929721 + 162562500 = 16939^2 + 12750^2 .

It is a cyclic number.

It is not a de Polignac number, because 449492221 - 2⁷ = 449492093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449492261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378406 + ... + 379591.

It is an arithmetic number, because the mean of its divisors is an integer number (112562703).

Almost surely, 2^449492221 is an apocalyptic number.

It is an amenable number.

449492221 is a deficient number, since it is larger than the sum of its proper divisors (758591).

449492221 is an equidigital number, since it uses as much as digits as its factorization.

449492221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758590.

The product of its digits is 41472, while the sum is 37.

The square root of 449492221 is about 21201.2315915845. The cubic root of 449492221 is about 766.0210899578.

The spelling of 449492221 in words is "four hundred forty-nine million, four hundred ninety-two thousand, two hundred twenty-one".