3966939 has 12 divisors (see below), whose sum is σ = 5928000. Its totient is φ = 2553264.

The previous prime is 3966929. The next prime is 3966961. The reversal of 3966939 is 9396693.

It is not a de Polignac number, because 3966939 - 2⁴ = 3966923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3966894 and 3966903.

It is not an unprimeable number, because it can be changed into a prime (3966929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7339 + ... + 7860.

It is an arithmetic number, because the mean of its divisors is an integer number (494000).

Almost surely, 2^3966939 is an apocalyptic number.

3966939 is a deficient number, since it is larger than the sum of its proper divisors (1961061).

3966939 is a wasteful number, since it uses less digits than its factorization.

3966939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15234 (or 15231 counting only the distinct ones).

The product of its digits is 236196, while the sum is 45.

The square root of 3966939 is about 1991.7176004645. The cubic root of 3966939 is about 158.3015525010.

The spelling of 3966939 in words is "three million, nine hundred sixty-six thousand, nine hundred thirty-nine".