3988942 has 4 divisors (see below), whose sum is σ = 5983416. Its totient is φ = 1994470.

The previous prime is 3988909. The next prime is 3988961. The reversal of 3988942 is 2498893.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997234 + ... + 997237.

It is an arithmetic number, because the mean of its divisors is an integer number (1495854).

Almost surely, 2^3988942 is an apocalyptic number.

3988942 is a deficient number, since it is larger than the sum of its proper divisors (1994474).

3988942 is a wasteful number, since it uses less digits than its factorization.

3988942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994473.

The product of its digits is 124416, while the sum is 43.

The square root of 3988942 is about 1997.2335867394. The cubic root of 3988942 is about 158.5936911864.

The spelling of 3988942 in words is "three million, nine hundred eighty-eight thousand, nine hundred forty-two".