3909042 has 12 divisors (see below), whose sum is σ = 8469630. Its totient is φ = 1303008.

The previous prime is 3909023. The next prime is 3909043. The reversal of 3909042 is 2409093.

It can be written as a sum of positive squares in only one way, i.e., 3538161 + 370881 = 1881^2 + 609^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3908997 and 3909015.

It is not an unprimeable number, because it can be changed into a prime (3909043) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 108567 + ... + 108602.

Almost surely, 2^3909042 is an apocalyptic number.

3909042 is an abundant number, since it is smaller than the sum of its proper divisors (4560588).

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

3909042 is a wasteful number, since it uses less digits than its factorization.

3909042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217177 (or 217174 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 3909042 is about 1977.1297377765. The cubic root of 3909042 is about 157.5276444295.

The spelling of 3909042 in words is "three million, nine hundred nine thousand, forty-two".