424390 has 24 divisors (see below), whose sum is σ = 810432. Its totient is φ = 159840.

The previous prime is 424351. The next prime is 424397. The reversal of 424390 is 93424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424397) 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 11 ways as a sum of consecutive naturals, for example, 11452 + ... + 11488.

It is an arithmetic number, because the mean of its divisors is an integer number (33768).

2⁴²⁴³⁹⁰ is an apocalyptic number.

424390 is a deficient number, since it is larger than the sum of its proper divisors (386042).

424390 is a wasteful number, since it uses less digits than its factorization.

424390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 75 counting only the distinct ones).

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

The square root of 424390 is about 651.4522238814. The cubic root of 424390 is about 75.1487418535.

The spelling of 424390 in words is "four hundred twenty-four thousand, three hundred ninety".