4388540 has 24 divisors (see below), whose sum is σ = 9925440. Its totient is φ = 1620288.

The previous prime is 4388539. The next prime is 4388557. The reversal of 4388540 is 458834.

It is a junction number, because it is equal to n+sod(n) for n = 4388497 and 4388506.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8180 + ... + 8699.

It is an arithmetic number, because the mean of its divisors is an integer number (413560).

Almost surely, 2^4388540 is an apocalyptic number.

It is an amenable number.

4388540 is an abundant number, since it is smaller than the sum of its proper divisors (5536900).

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

4388540 is a wasteful number, since it uses less digits than its factorization.

4388540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16901 (or 16899 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 4388540 is about 2094.8842450121. The cubic root of 4388540 is about 163.7218664640.

The spelling of 4388540 in words is "four million, three hundred eighty-eight thousand, five hundred forty".