109408613 has 2 divisors, whose sum is σ = 109408614. Its totient is φ = 109408612.

The previous prime is 109408603. The next prime is 109408661. The reversal of 109408613 is 316804901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86731969 + 22676644 = 9313^2 + 4762^2 .

It is a cyclic number.

It is not a de Polignac number, because 109408613 - 2²⁶ = 42299749 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 109408613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109408603) 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 as a sum of consecutive naturals, namely, 54704306 + 54704307.

It is an arithmetic number, because the mean of its divisors is an integer number (54704307).

Almost surely, 2^109408613 is an apocalyptic number.

It is an amenable number.

109408613 is a deficient number, since it is larger than the sum of its proper divisors (1).

109408613 is an equidigital number, since it uses as much as digits as its factorization.

109408613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 109408613 is about 10459.8572169987. The cubic root of 109408613 is about 478.2817806608.

The spelling of 109408613 in words is "one hundred nine million, four hundred eight thousand, six hundred thirteen".