3845287 has 2 divisors, whose sum is σ = 3845288. Its totient is φ = 3845286.

The previous prime is 3845279. The next prime is 3845291. The reversal of 3845287 is 7825483.

It is a strong prime.

It is an emirp because it is prime and its reverse (7825483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3845287 - 2³ = 3845279 is a prime.

It is a super-2 number, since 2×3845287² = 29572464224738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3845297) by changing a digit.

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 as a sum of consecutive naturals, namely, 1922643 + 1922644.

It is an arithmetic number, because the mean of its divisors is an integer number (1922644).

Almost surely, 2^3845287 is an apocalyptic number.

3845287 is a deficient number, since it is larger than the sum of its proper divisors (1).

3845287 is an equidigital number, since it uses as much as digits as its factorization.

3845287 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3845287 is about 1960.9403356553. The cubic root of 3845287 is about 156.6665404154. Note that the first 3 decimals are identical.

It can be divided in two parts, 384 and 5287, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 3845287 in words is "three million, eight hundred forty-five thousand, two hundred eighty-seven".