3937845 has 32 divisors (see below), whose sum is σ = 6814080. Its totient is φ = 1935360.

The previous prime is 3937831. The next prime is 3937849. The reversal of 3937845 is 5487393.

3937845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3937845 - 2⁶ = 3937781 is a prime.

Its product of digits (90720) is a multiple of the sum of its prime divisors (405).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3937849) 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 in 31 ways as a sum of consecutive naturals, for example, 11517 + ... + 11853.

It is an arithmetic number, because the mean of its divisors is an integer number (212940).

Almost surely, 2^3937845 is an apocalyptic number.

It is an amenable number.

3937845 is a deficient number, since it is larger than the sum of its proper divisors (2876235).

3937845 is a wasteful number, since it uses less digits than its factorization.

3937845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

The product of its digits is 90720, while the sum is 39.

The square root of 3937845 is about 1984.4004132231. The cubic root of 3937845 is about 157.9136017518.

The spelling of 3937845 in words is "three million, nine hundred thirty-seven thousand, eight hundred forty-five".