395747999856 has 240 divisors, whose sum is σ = 1286849386368. Its totient is φ = 116681990400.

The previous prime is 395747999849. The next prime is 395747999879. The reversal of 395747999856 is 658999747593.

395747999856 is a `hidden beast` number, since 3 + 9 + 5 + 7 + 479 + 9 + 98 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1457371 + ... + 1707461.

Almost surely, 2^395747999856 is an apocalyptic number.

395747999856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395747999856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643424693184).

395747999856 is an abundant number, since it is smaller than the sum of its proper divisors (891101386512).

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

395747999856 is a wasteful number, since it uses less digits than its factorization.

395747999856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250162 (or 250144 counting only the distinct ones).

The product of its digits is 4629441600, while the sum is 81.

The spelling of 395747999856 in words is "three hundred ninety-five billion, seven hundred forty-seven million, nine hundred ninety-nine thousand, eight hundred fifty-six".