3947937 has 16 divisors (see below), whose sum is σ = 6179712. Its totient is φ = 2194560.

The previous prime is 3947921. The next prime is 3947939. The reversal of 3947937 is 7397493.

It is not a de Polignac number, because 3947937 - 2⁴ = 3947921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1764 + ... + 3317.

It is an arithmetic number, because the mean of its divisors is an integer number (386232).

Almost surely, 2^3947937 is an apocalyptic number.

3947937 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

3947937 is a deficient number, since it is larger than the sum of its proper divisors (2231775).

3947937 is a wasteful number, since it uses less digits than its factorization.

3947937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128.

The product of its digits is 142884, while the sum is 42.

The square root of 3947937 is about 1986.9416196758. The cubic root of 3947937 is about 158.0483882131.

It can be divided in two parts, 3947 and 937, that added together give a palindrome (4884).

The spelling of 3947937 in words is "three million, nine hundred forty-seven thousand, nine hundred thirty-seven".