424990 has 8 divisors (see below), whose sum is σ = 765000. Its totient is φ = 169992.

The previous prime is 424967. The next prime is 424997. The reversal of 424990 is 99424.

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

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, 21240 + ... + 21259.

It is an arithmetic number, because the mean of its divisors is an integer number (95625).

2⁴²⁴⁹⁹⁰ is an apocalyptic number.

424990 is a deficient number, since it is larger than the sum of its proper divisors (340010).

424990 is a wasteful number, since it uses less digits than its factorization.

424990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42506.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 424990 is about 651.9125708253. The cubic root of 424990 is about 75.1841401215.

The spelling of 424990 in words is "four hundred twenty-four thousand, nine hundred ninety".