4208440 has 16 divisors (see below), whose sum is σ = 9469080. Its totient is φ = 1683360.

The previous prime is 4208437. The next prime is 4208441. The reversal of 4208440 is 448024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4208441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52566 + ... + 52645.

Almost surely, 2^4208440 is an apocalyptic number.

4208440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4208440 is an abundant number, since it is smaller than the sum of its proper divisors (5260640).

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

4208440 is a wasteful number, since it uses less digits than its factorization.

4208440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105222 (or 105218 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 4208440 is about 2051.4482689066. The cubic root of 4208440 is about 161.4508664000.

It can be divided in two parts, 42084 and 40, that added together give a palindrome (42124).

The spelling of 4208440 in words is "four million, two hundred eight thousand, four hundred forty".