3820403 has 4 divisors (see below), whose sum is σ = 3825120. Its totient is φ = 3815688.

The previous prime is 3820391. The next prime is 3820423. The reversal of 3820403 is 3040283.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3820403 - 2¹⁰ = 3819379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3820423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800 + ... + 2877.

It is an arithmetic number, because the mean of its divisors is an integer number (956280).

Almost surely, 2^3820403 is an apocalyptic number.

3820403 is a deficient number, since it is larger than the sum of its proper divisors (4717).

3820403 is a wasteful number, since it uses less digits than its factorization.

3820403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3820403 is about 1954.5851222190. The cubic root of 3820403 is about 156.3278634855.

Adding to 3820403 its reverse (3040283), we get a palindrome (6860686).

The spelling of 3820403 in words is "three million, eight hundred twenty thousand, four hundred three".