398037888 has 192 divisors, whose sum is σ = 1211857920. Its totient is φ = 130014720.

The previous prime is 398037883. The next prime is 398037901. The reversal of 398037888 is 888730893.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398037883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2083873 + ... + 2084063.

It is an arithmetic number, because the mean of its divisors is an integer number (6311760).

Almost surely, 2^398037888 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 398037888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605928960).

398037888 is an abundant number, since it is smaller than the sum of its proper divisors (813820032).

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

398037888 is an equidigital number, since it uses as much as digits as its factorization.

398037888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 398037888 is about 19950.8868975793. The cubic root of 398037888 is about 735.5995773997.

The spelling of 398037888 in words is "three hundred ninety-eight million, thirty-seven thousand, eight hundred eighty-eight".