109871693 has 2 divisors, whose sum is σ = 109871694. Its totient is φ = 109871692.

The previous prime is 109871689. The next prime is 109871711. The reversal of 109871693 is 396178901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57714409 + 52157284 = 7597^2 + 7222^2 .

It is a cyclic number.

It is not a de Polignac number, because 109871693 - 2² = 109871689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109871653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54935846 + 54935847.

It is an arithmetic number, because the mean of its divisors is an integer number (54935847).

Almost surely, 2^109871693 is an apocalyptic number.

It is an amenable number.

109871693 is a deficient number, since it is larger than the sum of its proper divisors (1).

109871693 is an equidigital number, since it uses as much as digits as its factorization.

109871693 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 109871693 is about 10481.9699007391. The cubic root of 109871693 is about 478.9556184663.

The spelling of 109871693 in words is "one hundred nine million, eight hundred seventy-one thousand, six hundred ninety-three".