398877712350 has 144 divisors (see below), whose sum is σ = 1071716655744. Its totient is φ = 98134608000.

The previous prime is 398877712301. The next prime is 398877712357. The reversal of 398877712350 is 53217778893.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398877712357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 80889385 + ... + 80894315.

It is an arithmetic number, because the mean of its divisors is an integer number (7442476776).

Almost surely, 2^398877712350 is an apocalyptic number.

398877712350 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 398877712350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (535858327872).

398877712350 is an abundant number, since it is smaller than the sum of its proper divisors (672838943394).

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

398877712350 is a wasteful number, since it uses less digits than its factorization.

398877712350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8163 (or 8145 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 60.

The spelling of 398877712350 in words is "three hundred ninety-eight billion, eight hundred seventy-seven million, seven hundred twelve thousand, three hundred fifty".