4089942 has 12 divisors (see below), whose sum is σ = 8861580. Its totient is φ = 1363308.

The previous prime is 4089937. The next prime is 4089947. The reversal of 4089942 is 2499804.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4089937) and next prime (4089947).

It is a junction number, because it is equal to n+sod(n) for n = 4089897 and 4089906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4089947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113592 + ... + 113627.

It is an arithmetic number, because the mean of its divisors is an integer number (738465).

Almost surely, 2^4089942 is an apocalyptic number.

4089942 is an abundant number, since it is smaller than the sum of its proper divisors (4771638).

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

4089942 is a wasteful number, since it uses less digits than its factorization.

4089942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227227 (or 227224 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 4089942 is about 2022.3605019877. The cubic root of 4089942 is about 159.9210808716.

The spelling of 4089942 in words is "four million, eighty-nine thousand, nine hundred forty-two".