3992805771 has 8 divisors (see below), whose sum is σ = 5398723584. Its totient is φ = 2624379240.

The previous prime is 3992805763. The next prime is 3992805779. The reversal of 3992805771 is 1775082993.

It is an interprime number because it is at equal distance from previous prime (3992805763) and next prime (3992805779).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3992805771 - 2³ = 3992805763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3992805779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9372571 + ... + 9372996.

It is an arithmetic number, because the mean of its divisors is an integer number (674840448).

Almost surely, 2^3992805771 is an apocalyptic number.

3992805771 is a deficient number, since it is larger than the sum of its proper divisors (1405917813).

3992805771 is a wasteful number, since it uses less digits than its factorization.

3992805771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18745641.

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 3992805771 is about 63188.6522328179. The cubic root of 3992805771 is about 1586.4488036252.

The spelling of 3992805771 in words is "three billion, nine hundred ninety-two million, eight hundred five thousand, seven hundred seventy-one".