3840245 has 4 divisors (see below), whose sum is σ = 4608300. Its totient is φ = 3072192.

The previous prime is 3840227. The next prime is 3840253. The reversal of 3840245 is 5420483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 538756 + 3301489 = 734^2 + 1817^2 .

It is a cyclic number.

It is not a de Polignac number, because 3840245 - 2¹⁰ = 3839221 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 384020 + ... + 384029.

It is an arithmetic number, because the mean of its divisors is an integer number (1152075).

Almost surely, 2^3840245 is an apocalyptic number.

It is an amenable number.

3840245 is a deficient number, since it is larger than the sum of its proper divisors (768055).

3840245 is an equidigital number, since it uses as much as digits as its factorization.

3840245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768054.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 3840245 is about 1959.6543062489. The cubic root of 3840245 is about 156.5980359321.

The spelling of 3840245 in words is "three million, eight hundred forty thousand, two hundred forty-five".