424489 has 4 divisors (see below), whose sum is σ = 457156. Its totient is φ = 391824.

The previous prime is 424481. The next prime is 424493. The reversal of 424489 is 984424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110889 + 313600 = 333^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 424489 - 2³ = 424481 is a prime.

It is a super-2 number, since 2×424489² = 360381822242, which contains 22 as substring.

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 424489.

It is not an unprimeable number, because it can be changed into a prime (424481) 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, 16314 + ... + 16339.

It is an arithmetic number, because the mean of its divisors is an integer number (114289).

2⁴²⁴⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

424489 is a deficient number, since it is larger than the sum of its proper divisors (32667).

424489 is a wasteful number, since it uses less digits than its factorization.

424489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32666.

The product of its digits is 9216, while the sum is 31.

The square root of 424489 is about 651.5282035338. The cubic root of 424489 is about 75.1545848651.

The spelling of 424489 in words is "four hundred twenty-four thousand, four hundred eighty-nine".