4393206440648 has 8 divisors (see below), whose sum is σ = 8237262076230. Its totient is φ = 2196603220320.

The previous prime is 4393206440599. The next prime is 4393206440683. The reversal of 4393206440648 is 8460446023934.

It can be written as a sum of positive squares in only one way, i.e., 4347066541444 + 46139899204 = 2084962^2 + 214802^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×4393206440648³ (a number of 39 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4393206440648.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274575402533 + ... + 274575402548.

Almost surely, 2^{4393206440648} is an apocalyptic number.

It is an amenable number.

4393206440648 is a deficient number, since it is larger than the sum of its proper divisors (3844055635582).

4393206440648 is a wasteful number, since it uses less digits than its factorization.

4393206440648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549150805087 (or 549150805083 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 53.

The spelling of 4393206440648 in words is "four trillion, three hundred ninety-three billion, two hundred six million, four hundred forty thousand, six hundred forty-eight".