393913648 has 10 divisors (see below), whose sum is σ = 763207724. Its totient is φ = 196956816.

The previous prime is 393913633. The next prime is 393913673. The reversal of 393913648 is 846319393.

It is a super-3 number, since 3×393913648³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 393913598 and 393913607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12309786 + ... + 12309817.

Almost surely, 2^393913648 is an apocalyptic number.

It is an amenable number.

393913648 is a deficient number, since it is larger than the sum of its proper divisors (369294076).

393913648 is a wasteful number, since it uses less digits than its factorization.

393913648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24619611 (or 24619605 counting only the distinct ones).

The product of its digits is 419904, while the sum is 46.

The square root of 393913648 is about 19847.2579466283. The cubic root of 393913648 is about 733.0501316011.

The spelling of 393913648 in words is "three hundred ninety-three million, nine hundred thirteen thousand, six hundred forty-eight".