3920717 has 4 divisors (see below), whose sum is σ = 3964860. Its totient is φ = 3876576.

The previous prime is 3920689. The next prime is 3920729. The reversal of 3920717 is 7170293.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1771561 + 2149156 = 1331^2 + 1466^2 .

It is a cyclic number.

It is not a de Polignac number, because 3920717 - 2¹² = 3916621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3920717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920737) 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, 21938 + ... + 22115.

It is an arithmetic number, because the mean of its divisors is an integer number (991215).

Almost surely, 2^3920717 is an apocalyptic number.

It is an amenable number.

3920717 is a deficient number, since it is larger than the sum of its proper divisors (44143).

3920717 is an equidigital number, since it uses as much as digits as its factorization.

3920717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44142.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 3920717 is about 1980.0800488869. The cubic root of 3920717 is about 157.6843160062.

The spelling of 3920717 in words is "three million, nine hundred twenty thousand, seven hundred seventeen".