109003997 has 2 divisors, whose sum is σ = 109003998. Its totient is φ = 109003996.

The previous prime is 109003991. The next prime is 109004009. The reversal of 109003997 is 799300901.

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., 65060356 + 43943641 = 8066^2 + 6629^2 .

It is a cyclic number.

It is not a de Polignac number, because 109003997 - 2⁶ = 109003933 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 109003997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109003991) 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, 54501998 + 54501999.

It is an arithmetic number, because the mean of its divisors is an integer number (54501999).

Almost surely, 2^109003997 is an apocalyptic number.

It is an amenable number.

109003997 is a deficient number, since it is larger than the sum of its proper divisors (1).

109003997 is an equidigital number, since it uses as much as digits as its factorization.

109003997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 109003997 is about 10440.4979287388. The cubic root of 109003997 is about 477.6914568988.

The spelling of 109003997 in words is "one hundred nine million, three thousand, nine hundred ninety-seven".