3992727291 has 16 divisors (see below), whose sum is σ = 6105663744. Its totient is φ = 2273493024.

The previous prime is 3992727259. The next prime is 3992727307. The reversal of 3992727291 is 1927272993.

It is not a de Polignac number, because 3992727291 - 2⁵ = 3992727259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3992727191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329976 + ... + 341861.

It is an arithmetic number, because the mean of its divisors is an integer number (381603984).

Almost surely, 2^3992727291 is an apocalyptic number.

3992727291 is a deficient number, since it is larger than the sum of its proper divisors (2112936453).

3992727291 is a wasteful number, since it uses less digits than its factorization.

3992727291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672130.

The product of its digits is 857304, while the sum is 51.

The square root of 3992727291 is about 63188.0312321883. The cubic root of 3992727291 is about 1586.4384094876.

The spelling of 3992727291 in words is "three billion, nine hundred ninety-two million, seven hundred twenty-seven thousand, two hundred ninety-one".