4239940 has 12 divisors (see below), whose sum is σ = 8903916. Its totient is φ = 1695968.

The previous prime is 4239931. The next prime is 4239971. The reversal of 4239940 is 499324.

4239940 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1085764 + 3154176 = 1042^2 + 1776^2 .

It is a super-3 number, since 3×4239940³ (a number of 21 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105979 + ... + 106018.

It is an arithmetic number, because the mean of its divisors is an integer number (741993).

Almost surely, 2^4239940 is an apocalyptic number.

It is an amenable number.

4239940 is an abundant number, since it is smaller than the sum of its proper divisors (4663976).

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

4239940 is a wasteful number, since it uses less digits than its factorization.

4239940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212006 (or 212004 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 4239940 is about 2059.1114588579. Note that the first 3 decimals coincide. The cubic root of 4239940 is about 161.8526832281.

The spelling of 4239940 in words is "four million, two hundred thirty-nine thousand, nine hundred forty".