393978672248 has 32 divisors (see below), whose sum is σ = 888673699200. Its totient is φ = 159961264992.

The previous prime is 393978672223. The next prime is 393978672313. The reversal of 393978672248 is 842276879393.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185139290 + ... + 185141417.

It is an arithmetic number, because the mean of its divisors is an integer number (27771053100).

Almost surely, 2^393978672248 is an apocalyptic number.

393978672248 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

393978672248 is an abundant number, since it is smaller than the sum of its proper divisors (494695026952).

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

393978672248 is a wasteful number, since it uses less digits than its factorization.

393978672248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370280739 (or 370280735 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 68.

The spelling of 393978672248 in words is "three hundred ninety-three billion, nine hundred seventy-eight million, six hundred seventy-two thousand, two hundred forty-eight".