450221402 has 8 divisors (see below), whose sum is σ = 693584436. Its totient is φ = 219026592.

The previous prime is 450221399. The next prime is 450221407. The reversal of 450221402 is 204122054.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 429691441 + 20529961 = 20729^2 + 4531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (450221407) 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, 3041963 + ... + 3042110.

Almost surely, 2^450221402 is an apocalyptic number.

450221402 is a deficient number, since it is larger than the sum of its proper divisors (243363034).

450221402 is a wasteful number, since it uses less digits than its factorization.

450221402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6084112.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 450221402 is about 21218.4212890592. The cubic root of 450221402 is about 766.4350876703.

Adding to 450221402 its reverse (204122054), we get a palindrome (654343456).

The spelling of 450221402 in words is "four hundred fifty million, two hundred twenty-one thousand, four hundred two".