88216109 has 4 divisors (see below), whose sum is σ = 92051616. Its totient is φ = 84380604.

The previous prime is 88216099. The next prime is 88216123. The reversal of 88216109 is 90161288.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88216109 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 (88216169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1917719 + ... + 1917764.

It is an arithmetic number, because the mean of its divisors is an integer number (23012904).

Almost surely, 2^88216109 is an apocalyptic number.

It is an amenable number.

88216109 is a deficient number, since it is larger than the sum of its proper divisors (3835507).

88216109 is a wasteful number, since it uses less digits than its factorization.

88216109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3835506.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 88216109 is about 9392.3431048913. The cubic root of 88216109 is about 445.1598281249.

The spelling of 88216109 in words is "eighty-eight million, two hundred sixteen thousand, one hundred nine".