6393975398 has 4 divisors (see below), whose sum is σ = 9590963100. Its totient is φ = 3196987698.

The previous prime is 6393975377. The next prime is 6393975449. The reversal of 6393975398 is 8935793936.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6393975398.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1598493848 + ... + 1598493851.

It is an arithmetic number, because the mean of its divisors is an integer number (2397740775).

Almost surely, 2^6393975398 is an apocalyptic number.

6393975398 is a deficient number, since it is larger than the sum of its proper divisors (3196987702).

6393975398 is a wasteful number, since it uses less digits than its factorization.

6393975398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196987701.

The product of its digits is 33067440, while the sum is 62.

The square root of 6393975398 is about 79962.3373720403. The cubic root of 6393975398 is about 1856.0527729356.

The spelling of 6393975398 in words is "six billion, three hundred ninety-three million, nine hundred seventy-five thousand, three hundred ninety-eight".