398871216 has 100 divisors (see below), whose sum is σ = 1176433632. Its totient is φ = 130425984.

The previous prime is 398871149. The next prime is 398871223. The reversal of 398871216 is 612178893.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65785 + ... + 71591.

Almost surely, 2^398871216 is an apocalyptic number.

398871216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398871216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588216816).

398871216 is an abundant number, since it is smaller than the sum of its proper divisors (777562416).

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

398871216 is a wasteful number, since it uses less digits than its factorization.

398871216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880 (or 5865 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 398871216 is about 19971.7604632141. The cubic root of 398871216 is about 736.1125674548.

The spelling of 398871216 in words is "three hundred ninety-eight million, eight hundred seventy-one thousand, two hundred sixteen".