4388840 has 16 divisors (see below), whose sum is σ = 9874980. Its totient is φ = 1755520.

The previous prime is 4388827. The next prime is 4388843. The reversal of 4388840 is 488834.

It can be written as a sum of positive squares in 2 ways, for example, as 4318084 + 70756 = 2078^2 + 266^2 .

It is an Ulam number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 4388840.

It is not an unprimeable number, because it can be changed into a prime (4388843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54821 + ... + 54900.

Almost surely, 2^4388840 is an apocalyptic number.

4388840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4388840 is an abundant number, since it is smaller than the sum of its proper divisors (5486140).

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

4388840 is a wasteful number, since it uses less digits than its factorization.

4388840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109732 (or 109728 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 4388840 is about 2094.9558467901. The cubic root of 4388840 is about 163.7255970472.

The spelling of 4388840 in words is "four million, three hundred eighty-eight thousand, eight hundred forty".