424813321 has 3 divisors (see below), whose sum is σ = 424833933. Its totient is φ = 424792710.

The previous prime is 424813313. The next prime is 424813331. The reversal of 424813321 is 123318424.

The square root of 424813321 is 20611.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 424813321 - 2³ = 424813313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 424813321.

It is not an unprimeable number, because it can be changed into a prime (424813331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 10306 + ... + 30916.

It is an arithmetic number, because the mean of its divisors is an integer number (141611311).

Almost surely, 2^424813321 is an apocalyptic number.

424813321 is the 20611-st square number.

424813321 is the 10306-th centered octagonal number.

It is an amenable number.

424813321 is a deficient number, since it is larger than the sum of its proper divisors (20612).

424813321 is an frugal number, since it uses more digits than its factorization.

424813321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41222 (or 20611 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The cubic root of 424813321 is about 751.7372003325.

The spelling of 424813321 in words is "four hundred twenty-four million, eight hundred thirteen thousand, three hundred twenty-one".