3988129 has 2 divisors, whose sum is σ = 3988130. Its totient is φ = 3988128.

The previous prime is 3988097. The next prime is 3988147. The reversal of 3988129 is 9218893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3459600 + 528529 = 1860^2 + 727^2 .

It is a cyclic number.

It is not a de Polignac number, because 3988129 - 2⁵ = 3988097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3988091 and 3988100.

It is not a weakly prime, because it can be changed into another prime (3982129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994064 + 1994065.

It is an arithmetic number, because the mean of its divisors is an integer number (1994065).

Almost surely, 2^3988129 is an apocalyptic number.

It is an amenable number.

3988129 is a deficient number, since it is larger than the sum of its proper divisors (1).

3988129 is an equidigital number, since it uses as much as digits as its factorization.

3988129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 40.

The square root of 3988129 is about 1997.0300448416. The cubic root of 3988129 is about 158.5829159456.

The spelling of 3988129 in words is "three million, nine hundred eighty-eight thousand, one hundred twenty-nine".