109687913 has 2 divisors, whose sum is σ = 109687914. Its totient is φ = 109687912.

The previous prime is 109687901. The next prime is 109687937. The reversal of 109687913 is 319786901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105411289 + 4276624 = 10267^2 + 2068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109687913 is a prime.

It is not a weakly prime, because it can be changed into another prime (109687813) 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, 54843956 + 54843957.

It is an arithmetic number, because the mean of its divisors is an integer number (54843957).

Almost surely, 2^109687913 is an apocalyptic number.

It is an amenable number.

109687913 is a deficient number, since it is larger than the sum of its proper divisors (1).

109687913 is an equidigital number, since it uses as much as digits as its factorization.

109687913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 109687913 is about 10473.1997498377. The cubic root of 109687913 is about 478.6884232056.

It can be divided in two parts, 10968 and 7913, that added together give a palindrome (18881).

The spelling of 109687913 in words is "one hundred nine million, six hundred eighty-seven thousand, nine hundred thirteen".