3985507 has 4 divisors (see below), whose sum is σ = 4005936. Its totient is φ = 3965080.

The previous prime is 3985469. The next prime is 3985511. The reversal of 3985507 is 7055893.

3985507 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 an emirpimes, since its reverse is a distinct semiprime: 7055893 = 13 ⋅542761.

It is a cyclic number.

It is not a de Polignac number, because 3985507 - 2¹¹ = 3983459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3985537) 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, 9919 + ... + 10312.

It is an arithmetic number, because the mean of its divisors is an integer number (1001484).

Almost surely, 2^3985507 is an apocalyptic number.

3985507 is a deficient number, since it is larger than the sum of its proper divisors (20429).

3985507 is a wasteful number, since it uses less digits than its factorization.

3985507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20428.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 3985507 is about 1996.3734620556. The cubic root of 3985507 is about 158.5481548197.

The spelling of 3985507 in words is "three million, nine hundred eighty-five thousand, five hundred seven".