398998132224 has 120 divisors (see below), whose sum is σ = 1121847047640. Its totient is φ = 125999235072.

The previous prime is 398998132193. The next prime is 398998132229. The reversal of 398998132224 is 422231899893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398998132229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194712 + ... + 914280.

It is an arithmetic number, because the mean of its divisors is an integer number (9348725397).

Almost surely, 2^398998132224 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 398998132224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560923523820).

398998132224 is an abundant number, since it is smaller than the sum of its proper divisors (722848915416).

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

398998132224 is an equidigital number, since it uses as much as digits as its factorization.

398998132224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719628 (or 719593 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 60.

The spelling of 398998132224 in words is "three hundred ninety-eight billion, nine hundred ninety-eight million, one hundred thirty-two thousand, two hundred twenty-four".