6838397 has 4 divisors (see below), whose sum is σ = 6843996. Its totient is φ = 6832800.

The previous prime is 6838387. The next prime is 6838399. The reversal of 6838397 is 7938386.

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: 7938386 = 2 ⋅3969193.

It can be written as a sum of positive squares in 2 ways, for example, as 391876 + 6446521 = 626^2 + 2539^2 .

It is a cyclic number.

It is not a de Polignac number, because 6838397 - 2⁸ = 6838141 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6838399) 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, 98 + ... + 3699.

It is an arithmetic number, because the mean of its divisors is an integer number (1710999).

Almost surely, 2^6838397 is an apocalyptic number.

It is an amenable number.

6838397 is a deficient number, since it is larger than the sum of its proper divisors (5599).

6838397 is a wasteful number, since it uses less digits than its factorization.

6838397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598.

The product of its digits is 217728, while the sum is 44.

The square root of 6838397 is about 2615.0328869825. The cubic root of 6838397 is about 189.8095691272.

The spelling of 6838397 in words is "six million, eight hundred thirty-eight thousand, three hundred ninety-seven".