3872845 has 8 divisors (see below), whose sum is σ = 4694040. Its totient is φ = 3067200.

The previous prime is 3872839. The next prime is 3872851. The reversal of 3872845 is 5482783.

3872845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3872839) and next prime (3872851).

It can be written as a sum of positive squares in 4 ways, for example, as 2350089 + 1522756 = 1533^2 + 1234^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3872845 - 2¹⁵ = 3840077 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3330 + ... + 4339.

It is an arithmetic number, because the mean of its divisors is an integer number (586755).

Almost surely, 2^3872845 is an apocalyptic number.

It is an amenable number.

3872845 is a deficient number, since it is larger than the sum of its proper divisors (821195).

3872845 is a wasteful number, since it uses less digits than its factorization.

3872845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775.

The product of its digits is 53760, while the sum is 37.

The square root of 3872845 is about 1967.9545218323. The cubic root of 3872845 is about 157.0399103373.

The spelling of 3872845 in words is "three million, eight hundred seventy-two thousand, eight hundred forty-five".