4218916 has 27 divisors (see below), whose sum is σ = 8097201.
Its totient is φ = 1922544.
The previous prime is 4218901. The next prime is 4218917. The reversal of 4218916 is 6198124.
It is a happy number.
The square root of 4218916 is 2054.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 624100 + 3594816 = 790^2 + 1896^2
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (4218917) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 53365 + ... + 53443.
Almost surely, 24218916 is an apocalyptic number.
4218916 is the 2054-th square number.
It is an amenable number.
4218916 is a deficient number, since it is larger than the sum of its proper divisors (3878285).
4218916 is a wasteful number, since it uses less digits than its factorization.
4218916 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 188 (or 94 counting only the distinct ones).
The product of its digits is 3456, while the sum is 31.
The cubic root of 4218916 is about 161.5847210500.
The spelling of 4218916 in words is "four million, two hundred eighteen thousand, nine hundred sixteen".