399703466444800 has 1152 divisors, whose sum is σ = 1236603539808000. Its totient is φ = 124987574845440.

The previous prime is 399703466444747. The next prime is 399703466444957. The reversal of 399703466444800 is 8444664307993.

It is a super-2 number, since 2×399703466444800² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 57936431751 + ... + 57936438649.

It is an arithmetic number, because the mean of its divisors is an integer number (1073440572750).

Almost surely, 2^{399703466444800} 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 399703466444800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618301769904000).

399703466444800 is an abundant number, since it is smaller than the sum of its proper divisors (836900073363200).

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

399703466444800 is a wasteful number, since it uses less digits than its factorization.

399703466444800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7249 (or 7224 counting only the distinct ones).

The product of its (nonzero) digits is 376233984, while the sum is 67.

The spelling of 399703466444800 in words is "three hundred ninety-nine trillion, seven hundred three billion, four hundred sixty-six million, four hundred forty-four thousand, eight hundred".