3985523 has 2 divisors, whose sum is σ = 3985524. Its totient is φ = 3985522.

The previous prime is 3985519. The next prime is 3985537. The reversal of 3985523 is 3255893.

It is a weak prime.

It is an emirp because it is prime and its reverse (3255893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3985523 - 2² = 3985519 is a prime.

It is a d-powerful number, because it can be written as 3³ + 9⁵ + 8³ + 5⁹ + 5⁹ + 2 + 3⁹ .

It is not a weakly prime, because it can be changed into another prime (3985543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992761 + 1992762.

It is an arithmetic number, because the mean of its divisors is an integer number (1992762).

Almost surely, 2^3985523 is an apocalyptic number.

3985523 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985523 is an equidigital number, since it uses as much as digits as its factorization.

3985523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 3985523 is about 1996.3774693179. The cubic root of 3985523 is about 158.5483669857.

The spelling of 3985523 in words is "three million, nine hundred eighty-five thousand, five hundred twenty-three".