3985437 has 4 divisors (see below), whose sum is σ = 5313920. Its totient is φ = 2656956.

The previous prime is 3985433. The next prime is 3985451. The reversal of 3985437 is 7345893.

3985437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7345893 = 3 ⋅2448631.

It is not a de Polignac number, because 3985437 - 2² = 3985433 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3985395 and 3985404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985433) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 664237 + ... + 664242.

It is an arithmetic number, because the mean of its divisors is an integer number (1328480).

Almost surely, 2^3985437 is an apocalyptic number.

It is an amenable number.

3985437 is a deficient number, since it is larger than the sum of its proper divisors (1328483).

3985437 is a wasteful number, since it uses less digits than its factorization.

3985437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328482.

The product of its digits is 90720, while the sum is 39.

The square root of 3985437 is about 1996.3559301888. The cubic root of 3985437 is about 158.5472265868.

The spelling of 3985437 in words is "three million, nine hundred eighty-five thousand, four hundred thirty-seven".