4418388 has 60 divisors (see below), whose sum is σ = 12450900. Its totient is φ = 1358208.

The previous prime is 4418357. The next prime is 4418389. The reversal of 4418388 is 8838144.

It can be written as a sum of positive squares in 2 ways, for example, as 2396304 + 2022084 = 1548^2 + 1422^2 .

It is a super-3 number, since 3×4418388³ (a number of 21 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4418389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3688 + ... + 4736.

It is an arithmetic number, because the mean of its divisors is an integer number (207515).

Almost surely, 2^4418388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4418388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6225450).

4418388 is an abundant number, since it is smaller than the sum of its proper divisors (8032512).

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

4418388 is a wasteful number, since it uses less digits than its factorization.

4418388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078 (or 1067 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 4418388 is about 2101.9961940974. The cubic root of 4418388 is about 164.0922047439.

The spelling of 4418388 in words is "four million, four hundred eighteen thousand, three hundred eighty-eight".