128488441 has 2 divisors, whose sum is σ = 128488442. Its totient is φ = 128488440.

The previous prime is 128488439. The next prime is 128488453. The reversal of 128488441 is 144884821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118722816 + 9765625 = 10896^2 + 3125^2 .

It is a cyclic number.

It is not a de Polignac number, because 128488441 - 2¹ = 128488439 is a prime.

It is a super-2 number, since 2×128488441² = 33018558941220962, which contains 22 as substring.

Together with 128488439, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 128488394 and 128488403.

It is not a weakly prime, because it can be changed into another prime (128488421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64244220 + 64244221.

It is an arithmetic number, because the mean of its divisors is an integer number (64244221).

Almost surely, 2^128488441 is an apocalyptic number.

It is an amenable number.

128488441 is a deficient number, since it is larger than the sum of its proper divisors (1).

128488441 is an equidigital number, since it uses as much as digits as its factorization.

128488441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65536, while the sum is 40.

The square root of 128488441 is about 11335.2741916550. The cubic root of 128488441 is about 504.6086449360.

The spelling of 128488441 in words is "one hundred twenty-eight million, four hundred eighty-eight thousand, four hundred forty-one".