109806997 has 2 divisors, whose sum is σ = 109806998. Its totient is φ = 109806996.

The previous prime is 109806923. The next prime is 109807003. The reversal of 109806997 is 799608901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106688241 + 3118756 = 10329^2 + 1766^2 .

It is a cyclic number.

It is not a de Polignac number, because 109806997 - 2⁷ = 109806869 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109806997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109806097) 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, 54903498 + 54903499.

It is an arithmetic number, because the mean of its divisors is an integer number (54903499).

Almost surely, 2^109806997 is an apocalyptic number.

It is an amenable number.

109806997 is a deficient number, since it is larger than the sum of its proper divisors (1).

109806997 is an equidigital number, since it uses as much as digits as its factorization.

109806997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 109806997 is about 10478.8833851704. The cubic root of 109806997 is about 478.8615918316.

The spelling of 109806997 in words is "one hundred nine million, eight hundred six thousand, nine hundred ninety-seven".