6839399 has 4 divisors (see below), whose sum is σ = 7816464. Its totient is φ = 5862336.

The previous prime is 6839387. The next prime is 6839401. The reversal of 6839399 is 9939386.

6839399 is digitally balanced in base 3 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9939386 = 2 ⋅4969693.

It is a cyclic number.

It is not a de Polignac number, because 6839399 - 2¹⁶ = 6773863 is a prime.

It is a Duffinian number.

6839399 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6839369) 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, 488522 + ... + 488535.

It is an arithmetic number, because the mean of its divisors is an integer number (1954116).

Almost surely, 2^6839399 is an apocalyptic number.

6839399 is a deficient number, since it is larger than the sum of its proper divisors (977065).

6839399 is an equidigital number, since it uses as much as digits as its factorization.

6839399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977064.

The product of its digits is 314928, while the sum is 47.

The square root of 6839399 is about 2615.2244645537. The cubic root of 6839399 is about 189.8188393260.

The spelling of 6839399 in words is "six million, eight hundred thirty-nine thousand, three hundred ninety-nine".