398684947206 has 192 divisors, whose sum is σ = 1113331806720. Its totient is φ = 93753676800.

The previous prime is 398684947169. The next prime is 398684947207. The reversal of 398684947206 is 602749486893.

It is a super-3 number, since 3×398684947206³ (a number of 36 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398684947207) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 1073031 + ... + 1395981.

It is an arithmetic number, because the mean of its divisors is an integer number (5798603160).

Almost surely, 2^398684947206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398684947206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556665903360).

398684947206 is an abundant number, since it is smaller than the sum of its proper divisors (714646859514).

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

398684947206 is a wasteful number, since it uses less digits than its factorization.

398684947206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323019 (or 323012 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 66.

The spelling of 398684947206 in words is "three hundred ninety-eight billion, six hundred eighty-four million, nine hundred forty-seven thousand, two hundred six".