3985942 has 4 divisors (see below), whose sum is σ = 5978916. Its totient is φ = 1992970.

The previous prime is 3985903. The next prime is 3985951. The reversal of 3985942 is 2495893.

It is a happy number.

3985942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2495893 = 83 ⋅30071.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 3985895 and 3985904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996484 + ... + 996487.

It is an arithmetic number, because the mean of its divisors is an integer number (1494729).

Almost surely, 2^3985942 is an apocalyptic number.

3985942 is a deficient number, since it is larger than the sum of its proper divisors (1992974).

3985942 is a wasteful number, since it uses less digits than its factorization.

3985942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992973.

The product of its digits is 77760, while the sum is 40.

The square root of 3985942 is about 1996.4824066342. The cubic root of 3985942 is about 158.5539228804.

The spelling of 3985942 in words is "three million, nine hundred eighty-five thousand, nine hundred forty-two".