88781109 has 4 divisors (see below), whose sum is σ = 118374816. Its totient is φ = 59187404.

The previous prime is 88781083. The next prime is 88781131. The reversal of 88781109 is 90118788.

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 not a de Polignac number, because 88781109 - 2¹⁶ = 88715573 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88781309) 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, 14796849 + ... + 14796854.

It is an arithmetic number, because the mean of its divisors is an integer number (29593704).

Almost surely, 2^88781109 is an apocalyptic number.

It is an amenable number.

88781109 is a deficient number, since it is larger than the sum of its proper divisors (29593707).

88781109 is a wasteful number, since it uses less digits than its factorization.

88781109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29593706.

The product of its (nonzero) digits is 32256, while the sum is 42.

The square root of 88781109 is about 9422.3727903326. The cubic root of 88781109 is about 446.1081819121.

The spelling of 88781109 in words is "eighty-eight million, seven hundred eighty-one thousand, one hundred nine".