3975917 has 4 divisors (see below), whose sum is σ = 4337376. Its totient is φ = 3614460.

The previous prime is 3975911. The next prime is 3975947. The reversal of 3975917 is 7195793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7195793 = 11 ⋅654163.

It is a cyclic number.

It is not a de Polignac number, because 3975917 - 2⁸ = 3975661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180713 + ... + 180734.

It is an arithmetic number, because the mean of its divisors is an integer number (1084344).

Almost surely, 2^3975917 is an apocalyptic number.

It is an amenable number.

3975917 is a deficient number, since it is larger than the sum of its proper divisors (361459).

3975917 is a wasteful number, since it uses less digits than its factorization.

3975917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361458.

The product of its digits is 59535, while the sum is 41.

The square root of 3975917 is about 1993.9701602582. The cubic root of 3975917 is about 158.4208855270.

The spelling of 3975917 in words is "three million, nine hundred seventy-five thousand, nine hundred seventeen".