3897853 has 2 divisors, whose sum is σ = 3897854. Its totient is φ = 3897852.

The previous prime is 3897841. The next prime is 3897871. The reversal of 3897853 is 3587983.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3485689 + 412164 = 1867^2 + 642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3897853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3897823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1948926 + 1948927.

It is an arithmetic number, because the mean of its divisors is an integer number (1948927).

Almost surely, 2^3897853 is an apocalyptic number.

It is an amenable number.

3897853 is a deficient number, since it is larger than the sum of its proper divisors (1).

3897853 is an equidigital number, since it uses as much as digits as its factorization.

3897853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 3897853 is about 1974.2981031242. The cubic root of 3897853 is about 157.3772016706.

The spelling of 3897853 in words is "three million, eight hundred ninety-seven thousand, eight hundred fifty-three".