463146221 has 4 divisors (see below), whose sum is σ = 470738844. Its totient is φ = 455553600.

The previous prime is 463146179. The next prime is 463146227. The reversal of 463146221 is 122641364.

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 152893225 + 310252996 = 12365^2 + 17614^2 .

It is a cyclic number.

It is not a de Polignac number, because 463146221 - 2⁶ = 463146157 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 (463146227) 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, 3796220 + ... + 3796341.

It is an arithmetic number, because the mean of its divisors is an integer number (117684711).

Almost surely, 2^463146221 is an apocalyptic number.

It is an amenable number.

463146221 is a deficient number, since it is larger than the sum of its proper divisors (7592623).

463146221 is an equidigital number, since it uses as much as digits as its factorization.

463146221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7592622.

The product of its digits is 6912, while the sum is 29.

The square root of 463146221 is about 21520.8322562117. The cubic root of 463146221 is about 773.7001984853.

Adding to 463146221 its reverse (122641364), we get a palindrome (585787585).

The spelling of 463146221 in words is "four hundred sixty-three million, one hundred forty-six thousand, two hundred twenty-one".