6397394 has 8 divisors (see below), whose sum is σ = 9830268. Its totient is φ = 3120640.

The previous prime is 6397387. The next prime is 6397397. The reversal of 6397394 is 4937936.

It can be written as a sum of positive squares in 2 ways, for example, as 3948169 + 2449225 = 1987^2 + 1565^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6397397) 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, 38927 + ... + 39090.

Almost surely, 2^6397394 is an apocalyptic number.

6397394 is a deficient number, since it is larger than the sum of its proper divisors (3432874).

6397394 is a wasteful number, since it uses less digits than its factorization.

6397394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78060.

The product of its digits is 122472, while the sum is 41.

The square root of 6397394 is about 2529.3070197190. The cubic root of 6397394 is about 185.6383499640.

The spelling of 6397394 in words is "six million, three hundred ninety-seven thousand, three hundred ninety-four".