107919509 has 4 divisors (see below), whose sum is σ = 107996460. Its totient is φ = 107842560.

The previous prime is 107919499. The next prime is 107919521. The reversal of 107919509 is 905919701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 905919701 = 239 ⋅3790459.

It can be written as a sum of positive squares in 2 ways, for example, as 33097009 + 74822500 = 5753^2 + 8650^2 .

It is a cyclic number.

It is not a de Polignac number, because 107919509 - 2¹⁶ = 107853973 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 (107919599) 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, 36332 + ... + 39189.

It is an arithmetic number, because the mean of its divisors is an integer number (26999115).

Almost surely, 2^107919509 is an apocalyptic number.

It is an amenable number.

107919509 is a deficient number, since it is larger than the sum of its proper divisors (76951).

107919509 is an equidigital number, since it uses as much as digits as its factorization.

107919509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76950.

The product of its (nonzero) digits is 25515, while the sum is 41.

The square root of 107919509 is about 10388.4314985468. The cubic root of 107919509 is about 476.1019792447.

The spelling of 107919509 in words is "one hundred seven million, nine hundred nineteen thousand, five hundred nine".