109007209 has 2 divisors, whose sum is σ = 109007210. Its totient is φ = 109007208.

The previous prime is 109007159. The next prime is 109007221. The reversal of 109007209 is 902700901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62726400 + 46280809 = 7920^2 + 6803^2 .

It is a cyclic number.

It is not a de Polignac number, because 109007209 - 2⁹ = 109006697 is a prime.

It is a super-2 number, since 2×109007209² = 23765143227939362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109007299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54503604 + 54503605.

It is an arithmetic number, because the mean of its divisors is an integer number (54503605).

Almost surely, 2^109007209 is an apocalyptic number.

It is an amenable number.

109007209 is a deficient number, since it is larger than the sum of its proper divisors (1).

109007209 is an equidigital number, since it uses as much as digits as its factorization.

109007209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 109007209 is about 10440.6517516868. The cubic root of 109007209 is about 477.6961488671.

The spelling of 109007209 in words is "one hundred nine million, seven thousand, two hundred nine".