3936406 has 4 divisors (see below), whose sum is σ = 5904612. Its totient is φ = 1968202.

The previous prime is 3936353. The next prime is 3936437. The reversal of 3936406 is 6046393.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 984100 + ... + 984103.

It is an arithmetic number, because the mean of its divisors is an integer number (1476153).

Almost surely, 2^3936406 is an apocalyptic number.

3936406 is a deficient number, since it is larger than the sum of its proper divisors (1968206).

3936406 is a wasteful number, since it uses less digits than its factorization.

3936406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968205.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 3936406 is about 1984.0378020592. The cubic root of 3936406 is about 157.8943640420.

The spelling of 3936406 in words is "three million, nine hundred thirty-six thousand, four hundred six".