88788109 has 4 divisors (see below), whose sum is σ = 89176060. Its totient is φ = 88400160.

The previous prime is 88788107. The next prime is 88788131. The reversal of 88788109 is 90188788.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79655625 + 9132484 = 8925^2 + 3022^2 .

It is a cyclic number.

It is not a de Polignac number, because 88788109 - 2¹ = 88788107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88788107) 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 in 3 ways as a sum of consecutive naturals, for example, 193632 + ... + 194089.

It is an arithmetic number, because the mean of its divisors is an integer number (22294015).

Almost surely, 2^88788109 is an apocalyptic number.

It is an amenable number.

88788109 is a deficient number, since it is larger than the sum of its proper divisors (387951).

88788109 is a wasteful number, since it uses less digits than its factorization.

88788109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387950.

The product of its (nonzero) digits is 258048, while the sum is 49.

The square root of 88788109 is about 9422.7442393392. The cubic root of 88788109 is about 446.1199061601.

The spelling of 88788109 in words is "eighty-eight million, seven hundred eighty-eight thousand, one hundred nine".