424445 has 16 divisors (see below), whose sum is σ = 594048. Its totient is φ = 285120.

The previous prime is 424433. The next prime is 424451. The reversal of 424445 is 544424.

It is not a de Polignac number, because 424445 - 2⁴ = 424429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 424445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2255 + ... + 2435.

It is an arithmetic number, because the mean of its divisors is an integer number (37128).

2⁴²⁴⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

424445 is a deficient number, since it is larger than the sum of its proper divisors (169603).

424445 is a wasteful number, since it uses less digits than its factorization.

424445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260.

The product of its digits is 2560, while the sum is 23.

The square root of 424445 is about 651.4944358934. The cubic root of 424445 is about 75.1519880832.

Adding to 424445 its reverse (544424), we get a palindrome (968869).

The spelling of 424445 in words is "four hundred twenty-four thousand, four hundred forty-five".