398208888 has 288 divisors, whose sum is σ = 1417029120. Its totient is φ = 99792000.

The previous prime is 398208887. The next prime is 398208917. The reversal of 398208888 is 888802893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398208887) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1202883 + ... + 1203213.

It is an arithmetic number, because the mean of its divisors is an integer number (4920240).

Almost surely, 2^398208888 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 398208888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (708514560).

398208888 is an abundant number, since it is smaller than the sum of its proper divisors (1018820232).

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

398208888 is a wasteful number, since it uses less digits than its factorization.

398208888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 54.

The square root of 398208888 is about 19955.1719611734. The cubic root of 398208888 is about 735.7049019787.

The spelling of 398208888 in words is "three hundred ninety-eight million, two hundred eight thousand, eight hundred eighty-eight".