399547229903136 has 1008 divisors, whose sum is σ = 1439403627771648. Its totient is φ = 108662253235200.

The previous prime is 399547229903111. The next prime is 399547229903191. The reversal of 399547229903136 is 631309922745993.

399547229903136 is a `hidden beast` number, since 3 + 9 + 9 + 5 + 472 + 2 + 9 + 90 + 31 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 2161456731 + ... + 2161641573.

It is an arithmetic number, because the mean of its divisors is an integer number (1427979789456).

Almost surely, 2^{399547229903136} is an apocalyptic number.

399547229903136 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 399547229903136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719701813885824).

399547229903136 is an abundant number, since it is smaller than the sum of its proper divisors (1039856397868512).

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

399547229903136 is a wasteful number, since it uses less digits than its factorization.

399547229903136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184977 (or 184947 counting only the distinct ones).

The product of its (nonzero) digits is 595213920, while the sum is 72.

The spelling of 399547229903136 in words is "three hundred ninety-nine trillion, five hundred forty-seven billion, two hundred twenty-nine million, nine hundred three thousand, one hundred thirty-six".