6396639048 has 48 divisors (see below), whose sum is σ = 17438990400. Its totient is φ = 2118088800.

The previous prime is 6396639037. The next prime is 6396639071. The reversal of 6396639048 is 8409366936.

It is a happy number.

It is a super-2 number, since 2×6396639048² = 81833982220796692608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6396638985 and 6396639003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283308 + ... + 305051.

It is an arithmetic number, because the mean of its divisors is an integer number (363312300).

Almost surely, 2^6396639048 is an apocalyptic number.

It is an amenable number.

6396639048 is an abundant number, since it is smaller than the sum of its proper divisors (11042351352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6396639048 is a wasteful number, since it uses less digits than its factorization.

6396639048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588522 (or 588515 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The square root of 6396639048 is about 79978.9912914635. The cubic root of 6396639048 is about 1856.3104732603.

The spelling of 6396639048 in words is "six billion, three hundred ninety-six million, six hundred thirty-nine thousand, forty-eight".