3918789 has 24 divisors (see below), whose sum is σ = 6851520. Its totient is φ = 2107008.

The previous prime is 3918757. The next prime is 3918793. The reversal of 3918789 is 9878193.

It is not a de Polignac number, because 3918789 - 2⁵ = 3918757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 759 + ... + 2900.

It is an arithmetic number, because the mean of its divisors is an integer number (285480).

Almost surely, 2^3918789 is an apocalyptic number.

It is an amenable number.

3918789 is a deficient number, since it is larger than the sum of its proper divisors (2932731).

3918789 is a wasteful number, since it uses less digits than its factorization.

3918789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689 (or 3686 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 3918789 is about 1979.5931400164. The cubic root of 3918789 is about 157.6584648495.

It can be divided in two parts, 391 and 8789, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 3918789 in words is "three million, nine hundred eighteen thousand, seven hundred eighty-nine".