3940237 has 12 divisors (see below), whose sum is σ = 4636380. Its totient is φ = 3338496.

The previous prime is 3940231. The next prime is 3940247. The reversal of 3940237 is 7320493.

It can be written as a sum of positive squares in 2 ways, for example, as 2019241 + 1920996 = 1421^2 + 1386^2 .

It is not a de Polignac number, because 3940237 - 2¹⁹ = 3415949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940231) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4339 + ... + 5167.

It is an arithmetic number, because the mean of its divisors is an integer number (386365).

Almost surely, 2^3940237 is an apocalyptic number.

It is an amenable number.

3940237 is a deficient number, since it is larger than the sum of its proper divisors (696143).

3940237 is an equidigital number, since it uses as much as digits as its factorization.

3940237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 3940237 is about 1985.0030226677. The cubic root of 3940237 is about 157.9455695649.

The spelling of 3940237 in words is "three million, nine hundred forty thousand, two hundred thirty-seven".