3999867360 has 192 divisors, whose sum is σ = 12856402944. Its totient is φ = 1045094400.

The previous prime is 3999867343. The next prime is 3999867419. The reversal of 3999867360 is 637689993.

It is a happy number.

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 = 3999867294 and 3999867303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8213037 + ... + 8213523.

It is an arithmetic number, because the mean of its divisors is an integer number (66960432).

Almost surely, 2^3999867360 is an apocalyptic number.

3999867360 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 3999867360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6428201472).

3999867360 is an abundant number, since it is smaller than the sum of its proper divisors (8856535584).

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

3999867360 is a wasteful number, since it uses less digits than its factorization.

3999867360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 13226976, while the sum is 60.

The square root of 3999867360 is about 63244.5045834023. The cubic root of 3999867360 is about 1587.3835057013.

The spelling of 3999867360 in words is "three billion, nine hundred ninety-nine million, eight hundred sixty-seven thousand, three hundred sixty".