3935997 has 12 divisors (see below), whose sum is σ = 6122844. Its totient is φ = 2422080.

The previous prime is 3935989. The next prime is 3935999. The reversal of 3935997 is 7995393.

It can be written as a sum of positive squares in 2 ways, for example, as 1879641 + 2056356 = 1371^2 + 1434^2 .

It is not a de Polignac number, because 3935997 - 2³ = 3935989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3935999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16704 + ... + 16937.

It is an arithmetic number, because the mean of its divisors is an integer number (510237).

Almost surely, 2^3935997 is an apocalyptic number.

It is an amenable number.

3935997 is a deficient number, since it is larger than the sum of its proper divisors (2186847).

3935997 is a wasteful number, since it uses less digits than its factorization.

3935997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33660 (or 33657 counting only the distinct ones).

The product of its digits is 229635, while the sum is 45.

The square root of 3935997 is about 1983.9347267488. The cubic root of 3935997 is about 157.8888953453. Note that the first 4 decimals are identical.

The spelling of 3935997 in words is "three million, nine hundred thirty-five thousand, nine hundred ninety-seven".