404216 has 8 divisors (see below), whose sum is σ = 757920. Its totient is φ = 202104.

The previous prime is 404213. The next prime is 404221. The reversal of 404216 is 612404.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 404194 and 404203.

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 as a sum of consecutive naturals, namely, 25256 + ... + 25271.

It is an arithmetic number, because the mean of its divisors is an integer number (94740).

2⁴⁰⁴²¹⁶ is an apocalyptic number.

It is an amenable number.

404216 is a deficient number, since it is larger than the sum of its proper divisors (353704).

404216 is a wasteful number, since it uses less digits than its factorization.

404216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50533 (or 50529 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 404216 is about 635.7798361068. The cubic root of 404216 is about 73.9385903968.

The spelling of 404216 in words is "four hundred four thousand, two hundred sixteen".