3805249 has 4 divisors (see below), whose sum is σ = 4348864. Its totient is φ = 3261636.

The previous prime is 3805237. The next prime is 3805253. The reversal of 3805249 is 9425083.

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.

It is not a de Polignac number, because 3805249 - 2⁷ = 3805121 is a prime.

It is a Duffinian number.

3805249 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3805249.

It is not an unprimeable number, because it can be changed into a prime (3805259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271797 + ... + 271810.

It is an arithmetic number, because the mean of its divisors is an integer number (1087216).

Almost surely, 2^3805249 is an apocalyptic number.

It is an amenable number.

3805249 is a deficient number, since it is larger than the sum of its proper divisors (543615).

3805249 is an equidigital number, since it uses as much as digits as its factorization.

3805249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543614.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 3805249 is about 1950.7047444449. The cubic root of 3805249 is about 156.1208930303.

The spelling of 3805249 in words is "three million, eight hundred five thousand, two hundred forty-nine".