3966942 has 48 divisors (see below), whose sum is σ = 9389952. Its totient is φ = 1113840.

The previous prime is 3966929. The next prime is 3966961. The reversal of 3966942 is 2496693.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3966942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30217 + ... + 30347.

It is an arithmetic number, because the mean of its divisors is an integer number (195624).

Almost surely, 2^3966942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3966942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4694976).

3966942 is an abundant number, since it is smaller than the sum of its proper divisors (5423010).

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

3966942 is a wasteful number, since it uses less digits than its factorization.

3966942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 246 counting only the distinct ones).

The product of its digits is 69984, while the sum is 39.

The square root of 3966942 is about 1991.7183535832. The cubic root of 3966942 is about 158.3015924062.

The spelling of 3966942 in words is "three million, nine hundred sixty-six thousand, nine hundred forty-two".