6438371 has 4 divisors (see below), whose sum is σ = 6444144. Its totient is φ = 6432600.

The previous prime is 6438361. The next prime is 6438373. The reversal of 6438371 is 1738346.

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: 1738346 = 2 ⋅869173.

It is a cyclic number.

It is not a de Polignac number, because 6438371 - 2⁶ = 6438307 is a prime.

It is a super-2 number, since 2×6438371² = 82905242267282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6438373) 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, 620 + ... + 3641.

It is an arithmetic number, because the mean of its divisors is an integer number (1611036).

Almost surely, 2^6438371 is an apocalyptic number.

6438371 is a deficient number, since it is larger than the sum of its proper divisors (5773).

6438371 is a wasteful number, since it uses less digits than its factorization.

6438371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772.

The product of its digits is 12096, while the sum is 32.

The square root of 6438371 is about 2537.3945298278. The cubic root of 6438371 is about 186.0338609490.

The spelling of 6438371 in words is "six million, four hundred thirty-eight thousand, three hundred seventy-one".