3929985269 has 8 divisors (see below), whose sum is σ = 4583073600. Its totient is φ = 3368558508.

The previous prime is 3929985263. The next prime is 3929985281. The reversal of 3929985269 is 9625899293.

It is a de Polignac number, because none of the positive numbers 2^k-3929985269 is a prime.

It is a super-3 number, since 3×3929985269³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3929985263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5728499 + ... + 5729184.

It is an arithmetic number, because the mean of its divisors is an integer number (572884200).

Almost surely, 2^3929985269 is an apocalyptic number.

It is an amenable number.

3929985269 is a deficient number, since it is larger than the sum of its proper divisors (653088331).

3929985269 is an equidigital number, since it uses as much as digits as its factorization.

3929985269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11457704 (or 11457690 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 62.

The square root of 3929985269 is about 62689.5945831523. The cubic root of 3929985269 is about 1578.0846936679.

The spelling of 3929985269 in words is "three billion, nine hundred twenty-nine million, nine hundred eighty-five thousand, two hundred sixty-nine".