404422 has 8 divisors (see below), whose sum is σ = 609336. Its totient is φ = 201312.

The previous prime is 404419. The next prime is 404423. The reversal of 404422 is 224404.

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

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 404396 and 404405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404423) 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, 633 + ... + 1099.

It is an arithmetic number, because the mean of its divisors is an integer number (76167).

2⁴⁰⁴⁴²² is an apocalyptic number.

404422 is a deficient number, since it is larger than the sum of its proper divisors (204914).

404422 is a wasteful number, since it uses less digits than its factorization.

404422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 404422 is about 635.9418212384. The cubic root of 404422 is about 73.9511486684.

Adding to 404422 its reverse (224404), we get a palindrome (628826).

The spelling of 404422 in words is "four hundred four thousand, four hundred twenty-two", and thus it is an iban number.