424388 has 18 divisors (see below), whose sum is σ = 796446. Its totient is φ = 197184.

The previous prime is 424351. The next prime is 424397. The reversal of 424388 is 883424.

It can be written as a sum of positive squares in only one way, i.e., 399424 + 24964 = 632^2 + 158^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 424388.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 424388.

It is an unprimeable number.

424388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5333 + ... + 5411.

It is an arithmetic number, because the mean of its divisors is an integer number (44247).

2⁴²⁴³⁸⁸ is an apocalyptic number.

It is an amenable number.

424388 is a deficient number, since it is larger than the sum of its proper divisors (372058).

424388 is a wasteful number, since it uses less digits than its factorization.

424388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 98 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

The square root of 424388 is about 651.4506888476. The cubic root of 424388 is about 75.1486238035.

The spelling of 424388 in words is "four hundred twenty-four thousand, three hundred eighty-eight".