3972946 has 8 divisors (see below), whose sum is σ = 5973120. Its totient is φ = 1981908.

The previous prime is 3972937. The next prime is 3972953. The reversal of 3972946 is 6492793.

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

It is a junction number, because it is equal to n+sod(n) for n = 3972899 and 3972908.

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, 1066 + ... + 3013.

It is an arithmetic number, because the mean of its divisors is an integer number (746640).

Almost surely, 2^3972946 is an apocalyptic number.

3972946 is a deficient number, since it is larger than the sum of its proper divisors (2000174).

3972946 is a wasteful number, since it uses less digits than its factorization.

3972946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568.

The product of its digits is 81648, while the sum is 40.

The square root of 3972946 is about 1993.2250249282. The cubic root of 3972946 is about 158.3814157447.

The spelling of 3972946 in words is "three million, nine hundred seventy-two thousand, nine hundred forty-six".