3998625696 has 384 divisors, whose sum is σ = 13572921600. Its totient is φ = 1134673920.

The previous prime is 3998625691. The next prime is 3998625751. The reversal of 3998625696 is 6965268993.

3998625696 is a `hidden beast` number, since 3 + 9 + 9 + 8 + 62 + 569 + 6 = 666.

It is a super-2 number, since 2×3998625696² = 31978014913422968832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3998625691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8749500 + ... + 8749956.

It is an arithmetic number, because the mean of its divisors is an integer number (35346150).

Almost surely, 2^3998625696 is an apocalyptic number.

3998625696 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 3998625696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6786460800).

3998625696 is an abundant number, since it is smaller than the sum of its proper divisors (9574295904).

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

3998625696 is a wasteful number, since it uses less digits than its factorization.

3998625696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 535 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 63.

The square root of 3998625696 is about 63234.6874428901. The cubic root of 3998625696 is about 1587.2192335092.

The spelling of 3998625696 in words is "three billion, nine hundred ninety-eight million, six hundred twenty-five thousand, six hundred ninety-six".