3920865293 has 4 divisors (see below), whose sum is σ = 3922366140. Its totient is φ = 3919364448.

The previous prime is 3920865283. The next prime is 3920865313. The reversal of 3920865293 is 3925680293.

It is a happy number.

3920865293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3925680293 = 983 ⋅3993571.

It can be written as a sum of positive squares in 2 ways, for example, as 3865481929 + 55383364 = 62173^2 + 7442^2 .

It is a cyclic number.

It is not a de Polignac number, because 3920865293 - 2¹⁸ = 3920603149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920865203) 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, 746498 + ... + 751731.

It is an arithmetic number, because the mean of its divisors is an integer number (980591535).

Almost surely, 2^3920865293 is an apocalyptic number.

It is an amenable number.

3920865293 is a deficient number, since it is larger than the sum of its proper divisors (1500847).

3920865293 is a wasteful number, since it uses less digits than its factorization.

3920865293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500846.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 3920865293 is about 62616.8131814451. The cubic root of 3920865293 is about 1576.8630400866.

The spelling of 3920865293 in words is "three billion, nine hundred twenty million, eight hundred sixty-five thousand, two hundred ninety-three".