404212 has 12 divisors (see below), whose sum is σ = 713440. Its totient is φ = 200376.

The previous prime is 404197. The next prime is 404213. The reversal of 404212 is 212404.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 404192 and 404201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404213) 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, 193 + ... + 919.

2⁴⁰⁴²¹² is an apocalyptic number.

It is an amenable number.

404212 is a deficient number, since it is larger than the sum of its proper divisors (309228).

404212 is a wasteful number, since it uses less digits than its factorization.

404212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 404212 is about 635.7766903560. The cubic root of 404212 is about 73.9383465046.

Adding to 404212 its reverse (212404), we get a palindrome (616616).

It can be divided in two parts, 404 and 212, that added together give a palindrome (616).

The spelling of 404212 in words is "four hundred four thousand, two hundred twelve", and thus it is an iban number.