6397899086 has 4 divisors (see below), whose sum is σ = 9596848632. Its totient is φ = 3198949542.

The previous prime is 6397899073. The next prime is 6397899097. The reversal of 6397899086 is 6809987936.

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

It is a super-2 number, since 2×6397899086² = 81866225429279270792, which contains 22 as substring.

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, 1599474770 + ... + 1599474773.

It is an arithmetic number, because the mean of its divisors is an integer number (2399212158).

Almost surely, 2^6397899086 is an apocalyptic number.

6397899086 is a deficient number, since it is larger than the sum of its proper divisors (3198949546).

6397899086 is a wasteful number, since it uses less digits than its factorization.

6397899086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198949545.

The product of its (nonzero) digits is 35271936, while the sum is 65.

The square root of 6397899086 is about 79986.8682097255. The cubic root of 6397899086 is about 1856.4323533159.

The spelling of 6397899086 in words is "six billion, three hundred ninety-seven million, eight hundred ninety-nine thousand, eighty-six".