4047685992 has 192 divisors, whose sum is σ = 13757627520. Its totient is φ = 1088391168.

The previous prime is 4047685979. The next prime is 4047685997. The reversal of 4047685992 is 2995867404.

4047685992 is a `hidden beast` number, since 4 + 0 + 47 + 6 + 8 + 599 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (4047685997) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 222588 + ... + 240084.

It is an arithmetic number, because the mean of its divisors is an integer number (71654310).

Almost surely, 2^4047685992 is an apocalyptic number.

4047685992 is a gapful number since it is divisible by the number (42) 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 4047685992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6878813760).

4047685992 is an abundant number, since it is smaller than the sum of its proper divisors (9709941528).

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

4047685992 is a wasteful number, since it uses less digits than its factorization.

4047685992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17542 (or 17526 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The square root of 4047685992 is about 63621.4271452629. The cubic root of 4047685992 is about 1593.6842156376.

The spelling of 4047685992 in words is "four billion, forty-seven million, six hundred eighty-five thousand, nine hundred ninety-two".