3988487 has 2 divisors, whose sum is σ = 3988488. Its totient is φ = 3988486.

The previous prime is 3988477. The next prime is 3988513. The reversal of 3988487 is 7848893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3988487 - 2⁴ = 3988471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3988427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994243 + 1994244.

It is an arithmetic number, because the mean of its divisors is an integer number (1994244).

Almost surely, 2^3988487 is an apocalyptic number.

3988487 is a deficient number, since it is larger than the sum of its proper divisors (1).

3988487 is an equidigital number, since it uses as much as digits as its factorization.

3988487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 47.

The square root of 3988487 is about 1997.1196759333. The cubic root of 3988487 is about 158.5876609430.

The spelling of 3988487 in words is "three million, nine hundred eighty-eight thousand, four hundred eighty-seven".