3840403 has 4 divisors (see below), whose sum is σ = 4389040. Its totient is φ = 3291768.

The previous prime is 3840401. The next prime is 3840409. The reversal of 3840403 is 3040483.

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 3840403 - 2¹ = 3840401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3840401) 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, 274308 + ... + 274321.

It is an arithmetic number, because the mean of its divisors is an integer number (1097260).

Almost surely, 2^3840403 is an apocalyptic number.

3840403 is a deficient number, since it is larger than the sum of its proper divisors (548637).

3840403 is an equidigital number, since it uses as much as digits as its factorization.

3840403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548636.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 3840403 is about 1959.6946190670. The cubic root of 3840403 is about 156.6001835512.

Adding to 3840403 its reverse (3040483), we get a palindrome (6880886).

The spelling of 3840403 in words is "three million, eight hundred forty thousand, four hundred three".