399828804480 has 1920 divisors, whose sum is σ = 1805221883520. Its totient is φ = 83756187648.

The previous prime is 399828804461. The next prime is 399828804511. The reversal of 399828804480 is 84408828993.

399828804480 is a `hidden beast` number, since 3 + 9 + 98 + 28 + 80 + 448 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 2029587742 + ... + 2029587938.

It is an arithmetic number, because the mean of its divisors is an integer number (940219731).

Almost surely, 2^399828804480 is an apocalyptic number.

399828804480 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 399828804480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (902610941760).

399828804480 is an abundant number, since it is smaller than the sum of its proper divisors (1405393079040).

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

399828804480 is a wasteful number, since it uses less digits than its factorization.

399828804480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 63.

The spelling of 399828804480 in words is "three hundred ninety-nine billion, eight hundred twenty-eight million, eight hundred four thousand, four hundred eighty".