3840013 has 4 divisors (see below), whose sum is σ = 3856320. Its totient is φ = 3823708.

The previous prime is 3840007. The next prime is 3840017. The reversal of 3840013 is 3100483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3100483 = 151 ⋅20533.

It is a cyclic number.

It is not a de Polignac number, because 3840013 - 2²¹ = 1742861 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 (3840017) 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, 7795 + ... + 8272.

It is an arithmetic number, because the mean of its divisors is an integer number (964080).

Almost surely, 2^3840013 is an apocalyptic number.

It is an amenable number.

3840013 is a deficient number, since it is larger than the sum of its proper divisors (16307).

3840013 is a wasteful number, since it uses less digits than its factorization.

3840013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16306.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3840013 is about 1959.5951112411. The cubic root of 3840013 is about 156.5948823593.

Adding to 3840013 its reverse (3100483), we get a palindrome (6940496).

The spelling of 3840013 in words is "three million, eight hundred forty thousand, thirteen".