6397139 has 8 divisors (see below), whose sum is σ = 7563360. Its totient is φ = 5294016.

The previous prime is 6397133. The next prime is 6397147. The reversal of 6397139 is 9317936.

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

It is not a de Polignac number, because 6397139 - 2¹⁶ = 6331603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6397133) 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, 15554 + ... + 15959.

It is an arithmetic number, because the mean of its divisors is an integer number (945420).

Almost surely, 2^6397139 is an apocalyptic number.

6397139 is a deficient number, since it is larger than the sum of its proper divisors (1166221).

6397139 is a wasteful number, since it uses less digits than its factorization.

6397139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31549.

The product of its digits is 30618, while the sum is 38.

The square root of 6397139 is about 2529.2566101525. The cubic root of 6397139 is about 185.6358834176.

The spelling of 6397139 in words is "six million, three hundred ninety-seven thousand, one hundred thirty-nine".