88421109 has 16 divisors (see below), whose sum is σ = 134873088. Its totient is φ = 50475312.

The previous prime is 88421101. The next prime is 88421141. The reversal of 88421109 is 90112488.

It is not a de Polignac number, because 88421109 - 2³ = 88421101 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 88421109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88421101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31564 + ... + 34250.

It is an arithmetic number, because the mean of its divisors is an integer number (8429568).

Almost surely, 2^88421109 is an apocalyptic number.

It is an amenable number.

88421109 is a deficient number, since it is larger than the sum of its proper divisors (46451979).

88421109 is a wasteful number, since it uses less digits than its factorization.

88421109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 88421109 is about 9403.2499169170. The cubic root of 88421109 is about 445.5043878940.

The spelling of 88421109 in words is "eighty-eight million, four hundred twenty-one thousand, one hundred nine".