3925917 has 12 divisors (see below), whose sum is σ = 5688540. Its totient is φ = 2609088.

The previous prime is 3925903. The next prime is 3925927. The reversal of 3925917 is 7195293.

It can be written as a sum of positive squares in 2 ways, for example, as 3437316 + 488601 = 1854^2 + 699^2 .

It is not a de Polignac number, because 3925917 - 2¹⁴ = 3909533 is a prime.

3925917 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3925927) 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, 4153 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (474045).

Almost surely, 2^3925917 is an apocalyptic number.

It is an amenable number.

3925917 is a deficient number, since it is larger than the sum of its proper divisors (1762623).

3925917 is a wasteful number, since it uses less digits than its factorization.

3925917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 1369 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 3925917 is about 1981.3926920225. The cubic root of 3925917 is about 157.7539968162.

The spelling of 3925917 in words is "three million, nine hundred twenty-five thousand, nine hundred seventeen".