3985443 has 56 divisors (see below), whose sum is σ = 7554816. Its totient is φ = 2041200.

The previous prime is 3985433. The next prime is 3985451. The reversal of 3985443 is 3445893.

It is not a de Polignac number, because 3985443 - 2¹⁴ = 3969059 is a prime.

3985443 is a lucky number.

It is a nialpdrome in base 3 and base 9.

It is a junction number, because it is equal to n+sod(n) for n = 3985398 and 3985407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985403) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 56098 + ... + 56168.

Almost surely, 2^3985443 is an apocalyptic number.

3985443 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3985443 is a deficient number, since it is larger than the sum of its proper divisors (3569373).

3985443 is an equidigital number, since it uses as much as digits as its factorization.

3985443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 92 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 3985443 is about 1996.3574329263. The cubic root of 3985443 is about 158.5473061501.

The spelling of 3985443 in words is "three million, nine hundred eighty-five thousand, four hundred forty-three".