398884860000 has 1440 divisors, whose sum is σ = 1702156135680. Its totient is φ = 87436800000.

The previous prime is 398884859987. The next prime is 398884860007. The reversal of 398884860000 is 68488893.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398884860007) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 865259770 + ... + 865260230.

It is an arithmetic number, because the mean of its divisors is an integer number (1182052872).

Almost surely, 2^398884860000 is an apocalyptic number.

398884860000 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 398884860000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851078067840).

398884860000 is an abundant number, since it is smaller than the sum of its proper divisors (1303271275680).

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

398884860000 is a wasteful number, since it uses less digits than its factorization.

398884860000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

It can be divided in two parts, 398884 and 860000, that added together give a square (1258884 = 1122²).

The spelling of 398884860000 in words is "three hundred ninety-eight billion, eight hundred eighty-four million, eight hundred sixty thousand".