109071397 has 2 divisors, whose sum is σ = 109071398. Its totient is φ = 109071396.

The previous prime is 109071341. The next prime is 109071421. The reversal of 109071397 is 793170901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85266756 + 23804641 = 9234^2 + 4879^2 .

It is an emirp because it is prime and its reverse (793170901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109071397 is a 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 (109081397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54535698 + 54535699.

It is an arithmetic number, because the mean of its divisors is an integer number (54535699).

Almost surely, 2^109071397 is an apocalyptic number.

It is an amenable number.

109071397 is a deficient number, since it is larger than the sum of its proper divisors (1).

109071397 is an equidigital number, since it uses as much as digits as its factorization.

109071397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 109071397 is about 10443.7252453327. The cubic root of 109071397 is about 477.7898929544.

The spelling of 109071397 in words is "one hundred nine million, seventy-one thousand, three hundred ninety-seven".