4189940 has 12 divisors (see below), whose sum is σ = 8798916. Its totient is φ = 1675968.

The previous prime is 4189903. The next prime is 4189951. The reversal of 4189940 is 499814.

It can be written as a sum of positive squares in 2 ways, for example, as 964324 + 3225616 = 982^2 + 1796^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4189940.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104729 + ... + 104768.

It is an arithmetic number, because the mean of its divisors is an integer number (733243).

Almost surely, 2^4189940 is an apocalyptic number.

It is an amenable number.

4189940 is an abundant number, since it is smaller than the sum of its proper divisors (4608976).

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

4189940 is a wasteful number, since it uses less digits than its factorization.

4189940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209506 (or 209504 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 4189940 is about 2046.9342930343. The cubic root of 4189940 is about 161.2139434234.

The spelling of 4189940 in words is "four million, one hundred eighty-nine thousand, nine hundred forty".