3923917 has 2 divisors, whose sum is σ = 3923918. Its totient is φ = 3923916.

The previous prime is 3923911. The next prime is 3923963. The reversal of 3923917 is 7193293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3798601 + 125316 = 1949^2 + 354^2 .

It is a cyclic number.

It is not a de Polignac number, because 3923917 - 2⁷ = 3923789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3923911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961958 + 1961959.

It is an arithmetic number, because the mean of its divisors is an integer number (1961959).

Almost surely, 2^3923917 is an apocalyptic number.

It is an amenable number.

3923917 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923917 is an equidigital number, since it uses as much as digits as its factorization.

3923917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 34.

The square root of 3923917 is about 1980.8879322163. The cubic root of 3923917 is about 157.7272037905.

The spelling of 3923917 in words is "three million, nine hundred twenty-three thousand, nine hundred seventeen".