3935809742 has 16 divisors (see below), whose sum is σ = 5949659520. Its totient is φ = 1952606712.

The previous prime is 3935809729. The next prime is 3935809771. The reversal of 3935809742 is 2479085393.

It is a happy number.

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, 670673 + ... + 676515.

It is an arithmetic number, because the mean of its divisors is an integer number (371853720).

Almost surely, 2^3935809742 is an apocalyptic number.

3935809742 is a deficient number, since it is larger than the sum of its proper divisors (2013849778).

3935809742 is a wasteful number, since it uses less digits than its factorization.

3935809742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8407.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 3935809742 is about 62736.0322462299. The cubic root of 3935809742 is about 1578.8639141150.

The spelling of 3935809742 in words is "three billion, nine hundred thirty-five million, eight hundred nine thousand, seven hundred forty-two".