424933221 has 4 divisors (see below), whose sum is σ = 566577632. Its totient is φ = 283288812.

The previous prime is 424933199. The next prime is 424933247. The reversal of 424933221 is 122339424.

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 424933221 - 2⁵ = 424933189 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 (424933321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70822201 + ... + 70822206.

It is an arithmetic number, because the mean of its divisors is an integer number (141644408).

Almost surely, 2^424933221 is an apocalyptic number.

It is an amenable number.

424933221 is a deficient number, since it is larger than the sum of its proper divisors (141644411).

424933221 is a wasteful number, since it uses less digits than its factorization.

424933221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141644410.

The product of its digits is 10368, while the sum is 30.

The square root of 424933221 is about 20613.9084358110. The cubic root of 424933221 is about 751.8079175216.

The spelling of 424933221 in words is "four hundred twenty-four million, nine hundred thirty-three thousand, two hundred twenty-one".