424999 has 4 divisors (see below), whose sum is σ = 427864. Its totient is φ = 422136.

The previous prime is 424997. The next prime is 425003. The reversal of 424999 is 999424.

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

It is a cyclic number.

It is not a de Polignac number, because 424999 - 2¹ = 424997 is a prime.

It is a Duffinian number.

424999 is a modest number, since divided by 999 gives 424 as remainder.

424999 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424997) 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 3 ways as a sum of consecutive naturals, for example, 1197 + ... + 1510.

It is an arithmetic number, because the mean of its divisors is an integer number (106966).

2⁴²⁴⁹⁹⁹ is an apocalyptic number.

424999 is a deficient number, since it is larger than the sum of its proper divisors (2865).

424999 is a wasteful number, since it uses less digits than its factorization.

424999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864.

The product of its digits is 23328, while the sum is 37.

The square root of 424999 is about 651.9194735548. The cubic root of 424999 is about 75.1846708418.

It can be divided in two parts, 42 and 4999, that added together give a square (5041 = 71²).

The spelling of 424999 in words is "four hundred twenty-four thousand, nine hundred ninety-nine".