3971942 has 8 divisors (see below), whose sum is σ = 6416256. Its totient is φ = 1833192.

The previous prime is 3971917. The next prime is 3971963. The reversal of 3971942 is 2491793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 76358 + ... + 76409.

It is an arithmetic number, because the mean of its divisors is an integer number (802032).

Almost surely, 2^3971942 is an apocalyptic number.

3971942 is a deficient number, since it is larger than the sum of its proper divisors (2444314).

3971942 is a wasteful number, since it uses less digits than its factorization.

3971942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152782.

The product of its digits is 13608, while the sum is 35.

The square root of 3971942 is about 1992.9731558654. The cubic root of 3971942 is about 158.3680731405.

It can be divided in two parts, 3971 and 942, that added together give a cube (4913 = 17³).

The spelling of 3971942 in words is "three million, nine hundred seventy-one thousand, nine hundred forty-two".