3992394249 has 6 divisors (see below), whose sum is σ = 5766791706. Its totient is φ = 2661596160.

The previous prime is 3992394193. The next prime is 3992394251. The reversal of 3992394249 is 9424932993.

3992394249 is a `hidden beast` number, since 3 + 9 + 9 + 2 + 394 + 249 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2909523600 + 1082870649 = 53940^2 + 32907^2 .

It is not a de Polignac number, because 3992394249 - 2¹² = 3992390153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3992394195 and 3992394204.

It is not an unprimeable number, because it can be changed into a prime (3992394269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221799672 + ... + 221799689.

It is an arithmetic number, because the mean of its divisors is an integer number (961131951).

Almost surely, 2^3992394249 is an apocalyptic number.

It is an amenable number.

3992394249 is a deficient number, since it is larger than the sum of its proper divisors (1774397457).

3992394249 is a wasteful number, since it uses less digits than its factorization.

3992394249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443599367 (or 443599364 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 54.

The square root of 3992394249 is about 63185.3958522062. The cubic root of 3992394249 is about 1586.3942988440.

The spelling of 3992394249 in words is "three billion, nine hundred ninety-two million, three hundred ninety-four thousand, two hundred forty-nine".