3784389 has 16 divisors (see below), whose sum is σ = 5795328. Its totient is φ = 2151792.

The previous prime is 3784381. The next prime is 3784399. The reversal of 3784389 is 9834873.

It is not a de Polignac number, because 3784389 - 2³ = 3784381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3784389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3784381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6154 + ... + 6740.

It is an arithmetic number, because the mean of its divisors is an integer number (362208).

Almost surely, 2^3784389 is an apocalyptic number.

It is an amenable number.

3784389 is a deficient number, since it is larger than the sum of its proper divisors (2010939).

3784389 is a wasteful number, since it uses less digits than its factorization.

3784389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904.

The product of its digits is 145152, while the sum is 42.

The square root of 3784389 is about 1945.3506110725. The cubic root of 3784389 is about 155.8350903618.

The spelling of 3784389 in words is "three million, seven hundred eighty-four thousand, three hundred eighty-nine".