88965509 has 2 divisors, whose sum is σ = 88965510. Its totient is φ = 88965508.

The previous prime is 88965497. The next prime is 88965517. The reversal of 88965509 is 90556988.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82864609 + 6100900 = 9103^2 + 2470^2 .

It is a cyclic number.

It is not a de Polignac number, because 88965509 - 2⁴ = 88965493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88965109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44482754 + 44482755.

It is an arithmetic number, because the mean of its divisors is an integer number (44482755).

Almost surely, 2^88965509 is an apocalyptic number.

It is an amenable number.

88965509 is a deficient number, since it is larger than the sum of its proper divisors (1).

88965509 is an equidigital number, since it uses as much as digits as its factorization.

88965509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 88965509 is about 9432.1529355710. The cubic root of 88965509 is about 446.4168266295.

The spelling of 88965509 in words is "eighty-eight million, nine hundred sixty-five thousand, five hundred nine".