3889239 has 4 divisors (see below), whose sum is σ = 5185656. Its totient is φ = 2592824.

The previous prime is 3889217. The next prime is 3889241. The reversal of 3889239 is 9329883.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3889239 - 2¹⁹ = 3364951 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 3889239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889279) 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, 648204 + ... + 648209.

It is an arithmetic number, because the mean of its divisors is an integer number (1296414).

Almost surely, 2^3889239 is an apocalyptic number.

3889239 is a deficient number, since it is larger than the sum of its proper divisors (1296417).

3889239 is a wasteful number, since it uses less digits than its factorization.

3889239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296416.

The product of its digits is 93312, while the sum is 42.

The square root of 3889239 is about 1972.1153617372. The cubic root of 3889239 is about 157.2611850606.

The spelling of 3889239 in words is "three million, eight hundred eighty-nine thousand, two hundred thirty-nine".