3889439 has 4 divisors (see below), whose sum is σ = 3893760. Its totient is φ = 3885120.

The previous prime is 3889427. The next prime is 3889441. The reversal of 3889439 is 9349883.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9349883 = 953 ⋅9811.

It is a cyclic number.

It is not a de Polignac number, because 3889439 - 2⁴ = 3889423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3889439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242 + ... + 2799.

It is an arithmetic number, because the mean of its divisors is an integer number (973440).

Almost surely, 2^3889439 is an apocalyptic number.

3889439 is a deficient number, since it is larger than the sum of its proper divisors (4321).

3889439 is a wasteful number, since it uses less digits than its factorization.

3889439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320.

The product of its digits is 186624, while the sum is 44.

The square root of 3889439 is about 1972.1660680582. The cubic root of 3889439 is about 157.2638806777.

The spelling of 3889439 in words is "three million, eight hundred eighty-nine thousand, four hundred thirty-nine".