3937997 has 16 divisors (see below), whose sum is σ = 4905600. Its totient is φ = 3084480.

The previous prime is 3937993. The next prime is 3938029. The reversal of 3937997 is 7997393.

It is not a de Polignac number, because 3937997 - 2² = 3937993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3937993) 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, 3347 + ... + 4367.

It is an arithmetic number, because the mean of its divisors is an integer number (306600).

Almost surely, 2^3937997 is an apocalyptic number.

It is an amenable number.

3937997 is a deficient number, since it is larger than the sum of its proper divisors (967603).

3937997 is a wasteful number, since it uses less digits than its factorization.

3937997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076.

The product of its digits is 321489, while the sum is 47.

The square root of 3937997 is about 1984.4387115756. The cubic root of 3937997 is about 157.9156335364.

The spelling of 3937997 in words is "three million, nine hundred thirty-seven thousand, nine hundred ninety-seven".