3990389760 has 528 divisors, whose sum is σ = 16094332800. Its totient is φ = 895352832.

The previous prime is 3990389759. The next prime is 3990389771. The reversal of 3990389760 is 679830993.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 3990389697 and 3990389706.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28707771 + ... + 28707909.

Almost surely, 2^3990389760 is an apocalyptic number.

3990389760 is a gapful number since it is divisible by the number (30) 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 3990389760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8047166400).

3990389760 is an abundant number, since it is smaller than the sum of its proper divisors (12103943040).

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

3990389760 is a wasteful number, since it uses less digits than its factorization.

3990389760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The square root of 3990389760 is about 63169.5318963185. The cubic root of 3990389760 is about 1586.1287570781.

The spelling of 3990389760 in words is "three billion, nine hundred ninety million, three hundred eighty-nine thousand, seven hundred sixty".