3984942 has 32 divisors (see below), whose sum is σ = 8773632. Its totient is φ = 1198944.

The previous prime is 3984941. The next prime is 3984943. The reversal of 3984942 is 2494893.

It is an interprime number because it is at equal distance from previous prime (3984941) and next prime (3984943).

It is a Harshad number since it is a multiple of its sum of digits (39).

Its product of digits (62208) is a multiple of the sum of its prime divisors (1152).

It is a self number, because there is not a number n which added to its sum of digits gives 3984942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3984941) 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 15 ways as a sum of consecutive naturals, for example, 3123 + ... + 4209.

It is an arithmetic number, because the mean of its divisors is an integer number (274176).

Almost surely, 2^3984942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3984942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4386816).

3984942 is an abundant number, since it is smaller than the sum of its proper divisors (4788690).

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

3984942 is a wasteful number, since it uses less digits than its factorization.

3984942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152.

The product of its digits is 62208, while the sum is 39.

The square root of 3984942 is about 1996.2319504506. The cubic root of 3984942 is about 158.5406623442.

The spelling of 3984942 in words is "three million, nine hundred eighty-four thousand, nine hundred forty-two".