3805389 has 18 divisors (see below), whose sum is σ = 6394830. Its totient is φ = 2174256.

The previous prime is 3805379. The next prime is 3805391. The reversal of 3805389 is 9835083.

It can be written as a sum of positive squares in only one way, i.e., 3572100 + 233289 = 1890^2 + 483^2 .

It is not a de Polignac number, because 3805389 - 2⁵ = 3805357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3805309) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3874 + ... + 4755.

Almost surely, 2^3805389 is an apocalyptic number.

It is an amenable number.

3805389 is a deficient number, since it is larger than the sum of its proper divisors (2589441).

3805389 is a wasteful number, since it uses less digits than its factorization.

3805389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8649 (or 8639 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 3805389 is about 1950.7406285819. The cubic root of 3805389 is about 156.1228076362.

The spelling of 3805389 in words is "three million, eight hundred five thousand, three hundred eighty-nine".