399382324380 has 432 divisors, whose sum is σ = 1365055735680. Its totient is φ = 97973680896.

The previous prime is 399382324379. The next prime is 399382324427. The reversal of 399382324380 is 83423283993.

399382324380 is a `hidden beast` number, since 399 + 3 + 8 + 2 + 3 + 243 + 8 + 0 = 666.

399382324380 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 311287219 + ... + 311288501.

It is an arithmetic number, because the mean of its divisors is an integer number (3159851240).

Almost surely, 2^399382324380 is an apocalyptic number.

399382324380 is a gapful number since it is divisible by the number (30) 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 399382324380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (682527867840).

399382324380 is an abundant number, since it is smaller than the sum of its proper divisors (965673411300).

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

399382324380 is a wasteful number, since it uses less digits than its factorization.

399382324380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 54.

The spelling of 399382324380 in words is "three hundred ninety-nine billion, three hundred eighty-two million, three hundred twenty-four thousand, three hundred eighty".