3929870393 has 8 divisors (see below), whose sum is σ = 3985531368. Its totient is φ = 3874258944.

The previous prime is 3929870387. The next prime is 3929870419. The reversal of 3929870393 is 3930789293.

It can be written as a sum of positive squares in 4 ways, for example, as 510895609 + 3418974784 = 22603^2 + 58472^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3929870393 - 2¹⁰ = 3929869369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3929870303) 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, 165305 + ... + 187577.

It is an arithmetic number, because the mean of its divisors is an integer number (498191421).

Almost surely, 2^3929870393 is an apocalyptic number.

It is an amenable number.

3929870393 is a deficient number, since it is larger than the sum of its proper divisors (55660975).

3929870393 is a wasteful number, since it uses less digits than its factorization.

3929870393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24763.

The product of its (nonzero) digits is 2204496, while the sum is 53.

The square root of 3929870393 is about 62688.6783478484. The cubic root of 3929870393 is about 1578.0693173742.

The spelling of 3929870393 in words is "three billion, nine hundred twenty-nine million, eight hundred seventy thousand, three hundred ninety-three".