109579765 has 4 divisors (see below), whose sum is σ = 131495724. Its totient is φ = 87663808.

The previous prime is 109579763. The next prime is 109579793. The reversal of 109579765 is 567975901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 567975901 = 3469 ⋅163729.

It can be written as a sum of positive squares in 2 ways, for example, as 17918289 + 91661476 = 4233^2 + 9574^2 .

It is a cyclic number.

It is not a de Polignac number, because 109579765 - 2¹ = 109579763 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 (109579763) 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, 10957972 + ... + 10957981.

It is an arithmetic number, because the mean of its divisors is an integer number (32873931).

Almost surely, 2^109579765 is an apocalyptic number.

It is an amenable number.

109579765 is a deficient number, since it is larger than the sum of its proper divisors (21915959).

109579765 is an equidigital number, since it uses as much as digits as its factorization.

109579765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21915958.

The product of its (nonzero) digits is 595350, while the sum is 49.

The square root of 109579765 is about 10468.0353935206. The cubic root of 109579765 is about 478.5310487735.

The spelling of 109579765 in words is "one hundred nine million, five hundred seventy-nine thousand, seven hundred sixty-five".