3908789 has 4 divisors (see below), whose sum is σ = 3914124. Its totient is φ = 3903456.

The previous prime is 3908771. The next prime is 3908831. The reversal of 3908789 is 9878093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9878093 = 757 ⋅13049.

It can be written as a sum of positive squares in 2 ways, for example, as 3034564 + 874225 = 1742^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 3908789 - 2¹⁶ = 3843253 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 (3908089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352 + ... + 3105.

It is an arithmetic number, because the mean of its divisors is an integer number (978531).

Almost surely, 2^3908789 is an apocalyptic number.

It is an amenable number.

3908789 is a deficient number, since it is larger than the sum of its proper divisors (5335).

3908789 is an equidigital number, since it uses as much as digits as its factorization.

3908789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 3908789 is about 1977.0657551027. The cubic root of 3908789 is about 157.5242458684.

It can be divided in two parts, 39087 and 89, that multiplied together give a palindrome (3478743).

The spelling of 3908789 in words is "three million, nine hundred eight thousand, seven hundred eighty-nine".