465221946389 has 4 divisors (see below), whose sum is σ = 465231755520. Its totient is φ = 465212137260.

The previous prime is 465221946323. The next prime is 465221946401. The reversal of 465221946389 is 983649122564.

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 a cyclic number.

It is not a de Polignac number, because 465221946389 - 2¹⁶ = 465221880853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (465221946589) 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, 4833077 + ... + 4928394.

It is an arithmetic number, because the mean of its divisors is an integer number (116307938880).

Almost surely, 2^465221946389 is an apocalyptic number.

It is an amenable number.

465221946389 is a deficient number, since it is larger than the sum of its proper divisors (9809131).

465221946389 is an equidigital number, since it uses as much as digits as its factorization.

465221946389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9809130.

The product of its digits is 22394880, while the sum is 59.

The spelling of 465221946389 in words is "four hundred sixty-five billion, two hundred twenty-one million, nine hundred forty-six thousand, three hundred eighty-nine".