399885140224 has 72 divisors (see below), whose sum is σ = 801394513920. Its totient is φ = 199145975808.

The previous prime is 399885140203. The next prime is 399885140233. The reversal of 399885140224 is 422041588993.

It is a happy 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, 84024757 + ... + 84029515.

It is an arithmetic number, because the mean of its divisors is an integer number (11130479360).

Almost surely, 2^399885140224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399885140224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400697256960).

399885140224 is an abundant number, since it is smaller than the sum of its proper divisors (401509373696).

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

399885140224 is an equidigital number, since it uses as much as digits as its factorization.

399885140224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015 (or 6001 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 399885140224 in words is "three hundred ninety-nine billion, eight hundred eighty-five million, one hundred forty thousand, two hundred twenty-four".