3988863960 has 32 divisors (see below), whose sum is σ = 11966592240. Its totient is φ = 1063697024.

The previous prime is 3988863959. The next prime is 3988864007. The reversal of 3988863960 is 693688893.

It is a super-2 number, since 2×3988863960² = 31822071382773763200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 3988863894 and 3988863903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16620147 + ... + 16620386.

Almost surely, 2^3988863960 is an apocalyptic number.

3988863960 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3988863960 is an abundant number, since it is smaller than the sum of its proper divisors (7977728280).

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

3988863960 is a wasteful number, since it uses less digits than its factorization.

3988863960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33240547 (or 33240543 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 60.

The square root of 3988863960 is about 63157.4537168813. The cubic root of 3988863960 is about 1585.9265693281.

The spelling of 3988863960 in words is "three billion, nine hundred eighty-eight million, eight hundred sixty-three thousand, nine hundred sixty".