3929779099 has 4 divisors (see below), whose sum is σ = 3943764360. Its totient is φ = 3915793840.

The previous prime is 3929779039. The next prime is 3929779141. The reversal of 3929779099 is 9909779293.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3929779099 - 2¹³ = 3929770907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3929779099.

It is not an unprimeable number, because it can be changed into a prime (3929779039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6992209 + ... + 6992770.

It is an arithmetic number, because the mean of its divisors is an integer number (985941090).

Almost surely, 2^3929779099 is an apocalyptic number.

3929779099 is a deficient number, since it is larger than the sum of its proper divisors (13985261).

3929779099 is a wasteful number, since it uses less digits than its factorization.

3929779099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13985260.

The product of its (nonzero) digits is 17360406, while the sum is 64.

The square root of 3929779099 is about 62687.9501898092. The cubic root of 3929779099 is about 1578.0570973464.

The spelling of 3929779099 in words is "three billion, nine hundred twenty-nine million, seven hundred seventy-nine thousand, ninety-nine".