3992771009 has 2 divisors, whose sum is σ = 3992771010. Its totient is φ = 3992771008.

The previous prime is 3992770993. The next prime is 3992771033. The reversal of 3992771009 is 9001772993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2159646784 + 1833124225 = 46472^2 + 42815^2 .

It is an emirp because it is prime and its reverse (9001772993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3992771009 - 2⁴ = 3992770993 is a prime.

It is not a weakly prime, because it can be changed into another prime (3992771099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996385504 + 1996385505.

It is an arithmetic number, because the mean of its divisors is an integer number (1996385505).

Almost surely, 2^3992771009 is an apocalyptic number.

It is an amenable number.

3992771009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3992771009 is an equidigital number, since it uses as much as digits as its factorization.

3992771009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214326, while the sum is 47.

The square root of 3992771009 is about 63188.3771670075. The cubic root of 3992771009 is about 1586.4441996536. Note that the first 3 decimals are identical.

The spelling of 3992771009 in words is "three billion, nine hundred ninety-two million, seven hundred seventy-one thousand, nine".