3803845 has 4 divisors (see below), whose sum is σ = 4564620. Its totient is φ = 3043072.

The previous prime is 3803831. The next prime is 3803861. The reversal of 3803845 is 5483083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5483083 = 1319 ⋅4157.

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 1185921 = 1618^2 + 1089^2 .

It is a cyclic number.

It is not a de Polignac number, because 3803845 - 2¹¹ = 3801797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380380 + ... + 380389.

It is an arithmetic number, because the mean of its divisors is an integer number (1141155).

Almost surely, 2^3803845 is an apocalyptic number.

It is an amenable number.

3803845 is a deficient number, since it is larger than the sum of its proper divisors (760775).

3803845 is an equidigital number, since it uses as much as digits as its factorization.

3803845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760774.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 3803845 is about 1950.3448413037. The cubic root of 3803845 is about 156.1016896704.

It can be divided in two parts, 38038 and 45, that added together give a palindrome (38083).

The spelling of 3803845 in words is "three million, eight hundred three thousand, eight hundred forty-five".