3898440216 has 384 divisors, whose sum is σ = 12813465600. Its totient is φ = 1057536000.

The previous prime is 3898440191. The next prime is 3898440253. The reversal of 3898440216 is 6120448983.

It is a happy number.

3898440216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3898440216² = 30395672235452253312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28455700 + ... + 28455836.

It is an arithmetic number, because the mean of its divisors is an integer number (33368400).

Almost surely, 2^3898440216 is an apocalyptic number.

3898440216 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 3898440216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6406732800).

3898440216 is an abundant number, since it is smaller than the sum of its proper divisors (8915025384).

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

3898440216 is a wasteful number, since it uses less digits than its factorization.

3898440216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 3898440216 is about 62437.4904684677. The cubic root of 3898440216 is about 1573.8510429204.

The spelling of 3898440216 in words is "three billion, eight hundred ninety-eight million, four hundred forty thousand, two hundred sixteen".