3985666392 has 32 divisors (see below), whose sum is σ = 10052351280. Its totient is φ = 1316797440.

The previous prime is 3985666387. The next prime is 3985666427. The reversal of 3985666392 is 2936665893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732109 + ... + 737532.

Almost surely, 2^3985666392 is an apocalyptic number.

It is an amenable number.

3985666392 is an abundant number, since it is smaller than the sum of its proper divisors (6066684888).

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

3985666392 is a wasteful number, since it uses less digits than its factorization.

3985666392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469763 (or 1469759 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 57.

The square root of 3985666392 is about 63132.1343849549. The cubic root of 3985666392 is about 1585.5026839192.

The spelling of 3985666392 in words is "three billion, nine hundred eighty-five million, six hundred sixty-six thousand, three hundred ninety-two".