7988129 has 2 divisors, whose sum is σ = 7988130. Its totient is φ = 7988128.

The previous prime is 7988117. The next prime is 7988131. The reversal of 7988129 is 9218897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4558225 + 3429904 = 2135^2 + 1852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7988129 is a prime.

Together with 7988131, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 7988129.

It is not a weakly prime, because it can be changed into another prime (7984129) 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 as a sum of consecutive naturals, namely, 3994064 + 3994065.

It is an arithmetic number, because the mean of its divisors is an integer number (3994065).

Almost surely, 2^7988129 is an apocalyptic number.

It is an amenable number.

7988129 is a deficient number, since it is larger than the sum of its proper divisors (1).

7988129 is an equidigital number, since it uses as much as digits as its factorization.

7988129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 44.

The square root of 7988129 is about 2826.3278295343. The cubic root of 7988129 is about 199.9010260288.

The spelling of 7988129 in words is "seven million, nine hundred eighty-eight thousand, one hundred twenty-nine".