3940726 has 4 divisors (see below), whose sum is σ = 5911092. Its totient is φ = 1970362.

The previous prime is 3940721. The next prime is 3940747. The reversal of 3940726 is 6270493.

3940726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6270493 = 293 ⋅21401.

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 not an unprimeable number, because it can be changed into a prime (3940721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985180 + ... + 985183.

It is an arithmetic number, because the mean of its divisors is an integer number (1477773).

Almost surely, 2^3940726 is an apocalyptic number.

3940726 is a deficient number, since it is larger than the sum of its proper divisors (1970366).

3940726 is a wasteful number, since it uses less digits than its factorization.

3940726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970365.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 3940726 is about 1985.1261924623. The cubic root of 3940726 is about 157.9521031980.

The spelling of 3940726 in words is "three million, nine hundred forty thousand, seven hundred twenty-six".