4093999686 has 240 divisors, whose sum is σ = 11187044352. Its totient is φ = 1114495200.

The previous prime is 4093999631. The next prime is 4093999697. The reversal of 4093999686 is 6869993904.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 31251841 + ... + 31251971.

Almost surely, 2^4093999686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4093999686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5593522176).

4093999686 is an abundant number, since it is smaller than the sum of its proper divisors (7093044666).

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

4093999686 is a wasteful number, since it uses less digits than its factorization.

4093999686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 63.

The square root of 4093999686 is about 63984.3706384614. The cubic root of 4093999686 is about 1599.7395000376.

It can be divided in two parts, 40939 and 99686, that added together give a square (140625 = 375²).

The spelling of 4093999686 in words is "four billion, ninety-three million, nine hundred ninety-nine thousand, six hundred eighty-six".