3138839 has 8 divisors (see below), whose sum is σ = 3473280. Its totient is φ = 2812600.

The previous prime is 3138809. The next prime is 3138847. The reversal of 3138839 is 9388313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3138839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3138799 and 3138808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229 + ... + 2790.

It is an arithmetic number, because the mean of its divisors is an integer number (434160).

Almost surely, 2^3138839 is an apocalyptic number.

3138839 is a deficient number, since it is larger than the sum of its proper divisors (334441).

3138839 is a wasteful number, since it uses less digits than its factorization.

3138839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101.

The product of its digits is 15552, while the sum is 35.

The square root of 3138839 is about 1771.6768892775. The cubic root of 3138839 is about 146.4163850145.

The spelling of 3138839 in words is "three million, one hundred thirty-eight thousand, eight hundred thirty-nine".