3923789 has 2 divisors, whose sum is σ = 3923790. Its totient is φ = 3923788.

The previous prime is 3923779. The next prime is 3923791. The reversal of 3923789 is 9873293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2778889 + 1144900 = 1667^2 + 1070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3923789 is a prime.

It is a super-3 number, since 3×3923789³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

Together with 3923791, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3923779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961894 + 1961895.

It is an arithmetic number, because the mean of its divisors is an integer number (1961895).

Almost surely, 2^3923789 is an apocalyptic number.

It is an amenable number.

3923789 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923789 is an equidigital number, since it uses as much as digits as its factorization.

3923789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 3923789 is about 1980.8556232093. The cubic root of 3923789 is about 157.7254887269.

The spelling of 3923789 in words is "three million, nine hundred twenty-three thousand, seven hundred eighty-nine".