404420400216 has 48 divisors (see below), whose sum is σ = 1251777430800. Its totient is φ = 115548685632.

The previous prime is 404420400193. The next prime is 404420400221. The reversal of 404420400216 is 612004024404.

It is a happy number.

404420400216 is a `hidden beast` number, since 4 + 0 + 4 + 42 + 0 + 400 + 216 = 666.

It is a super-2 number, since 2×404420400216² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404420400216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401210211 + ... + 401211218.

It is an arithmetic number, because the mean of its divisors is an integer number (26078696475).

Almost surely, 2^404420400216 is an apocalyptic number.

It is an amenable number.

404420400216 is an abundant number, since it is smaller than the sum of its proper divisors (847357030584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404420400216 is a wasteful number, since it uses less digits than its factorization.

404420400216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802421448 (or 802421441 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The spelling of 404420400216 in words is "four hundred four billion, four hundred twenty million, four hundred thousand, two hundred sixteen".