450212213 has 4 divisors (see below), whose sum is σ = 491140608. Its totient is φ = 409283820.

The previous prime is 450212209. The next prime is 450212233. The reversal of 450212213 is 312212054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 450212213 - 2² = 450212209 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 (450212233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20464181 + ... + 20464202.

It is an arithmetic number, because the mean of its divisors is an integer number (122785152).

Almost surely, 2^450212213 is an apocalyptic number.

It is an amenable number.

450212213 is a deficient number, since it is larger than the sum of its proper divisors (40928395).

450212213 is a wasteful number, since it uses less digits than its factorization.

450212213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40928394.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 450212213 is about 21218.2047544084. The cubic root of 450212213 is about 766.4298733322.

Adding to 450212213 its reverse (312212054), we get a palindrome (762424267).

The spelling of 450212213 in words is "four hundred fifty million, two hundred twelve thousand, two hundred thirteen".