3988507 has 4 divisors (see below), whose sum is σ = 3997000. Its totient is φ = 3980016.

The previous prime is 3988487. The next prime is 3988513. The reversal of 3988507 is 7058893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3988507 - 2¹¹ = 3986459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3988507.

It is not an unprimeable number, because it can be changed into a prime (3988007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3498 + ... + 4495.

It is an arithmetic number, because the mean of its divisors is an integer number (999250).

Almost surely, 2^3988507 is an apocalyptic number.

3988507 is a deficient number, since it is larger than the sum of its proper divisors (8493).

3988507 is an equidigital number, since it uses as much as digits as its factorization.

3988507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8492.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 3988507 is about 1997.1246831382. The cubic root of 3988507 is about 158.5879260183.

The spelling of 3988507 in words is "three million, nine hundred eighty-eight thousand, five hundred seven".