107821799 has 2 divisors, whose sum is σ = 107821800. Its totient is φ = 107821798.

The previous prime is 107821783. The next prime is 107821817. The reversal of 107821799 is 997128701.

It is a weak prime.

It is an emirp because it is prime and its reverse (997128701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 107821799 - 2⁴ = 107821783 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (107821199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53910899 + 53910900.

It is an arithmetic number, because the mean of its divisors is an integer number (53910900).

Almost surely, 2^107821799 is an apocalyptic number.

107821799 is a deficient number, since it is larger than the sum of its proper divisors (1).

107821799 is an equidigital number, since it uses as much as digits as its factorization.

107821799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 44.

The square root of 107821799 is about 10383.7276062116. The cubic root of 107821799 is about 475.9582487566.

The spelling of 107821799 in words is "one hundred seven million, eight hundred twenty-one thousand, seven hundred ninety-nine".