3870249 has 4 divisors (see below), whose sum is σ = 5160336. Its totient is φ = 2580164.

The previous prime is 3870247. The next prime is 3870259. The reversal of 3870249 is 9420783.

3870249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 3870249 - 2¹ = 3870247 is a prime.

It is an Ulam number.

It is a D-number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (3870247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645039 + ... + 645044.

It is an arithmetic number, because the mean of its divisors is an integer number (1290084).

Almost surely, 2^3870249 is an apocalyptic number.

It is an amenable number.

3870249 is a deficient number, since it is larger than the sum of its proper divisors (1290087).

3870249 is a wasteful number, since it uses less digits than its factorization.

3870249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290086.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 3870249 is about 1967.2948431793. The cubic root of 3870249 is about 157.0048141112.

The spelling of 3870249 in words is "three million, eight hundred seventy thousand, two hundred forty-nine".