3988747 has 16 divisors (see below), whose sum is σ = 4824000. Its totient is φ = 3292800.

The previous prime is 3988717. The next prime is 3988753. The reversal of 3988747 is 7478893.

It is not a de Polignac number, because 3988747 - 2⁷ = 3988619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3988697 and 3988706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3988717) 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 15 ways as a sum of consecutive naturals, for example, 9747 + ... + 10147.

It is an arithmetic number, because the mean of its divisors is an integer number (301500).

Almost surely, 2^3988747 is an apocalyptic number.

3988747 is a deficient number, since it is larger than the sum of its proper divisors (835253).

3988747 is an equidigital number, since it uses as much as digits as its factorization.

3988747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 437 counting only the distinct ones).

The product of its digits is 338688, while the sum is 46.

The square root of 3988747 is about 1997.1847686181. The cubic root of 3988747 is about 158.5911068525.

The spelling of 3988747 in words is "three million, nine hundred eighty-eight thousand, seven hundred forty-seven".