424309 has 8 divisors (see below), whose sum is σ = 443520. Its totient is φ = 405600.

The previous prime is 424273. The next prime is 424313. The reversal of 424309 is 903424.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424309 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 424309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3174 + ... + 3304.

It is an arithmetic number, because the mean of its divisors is an integer number (55440).

2⁴²⁴³⁰⁹ is an apocalyptic number.

It is an amenable number.

424309 is a deficient number, since it is larger than the sum of its proper divisors (19211).

424309 is a wasteful number, since it uses less digits than its factorization.

424309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 424309 is about 651.3900521193. The cubic root of 424309 is about 75.1439605318.

The spelling of 424309 in words is "four hundred twenty-four thousand, three hundred nine".