109430197 has 2 divisors, whose sum is σ = 109430198. Its totient is φ = 109430196.

The previous prime is 109430179. The next prime is 109430249. The reversal of 109430197 is 791034901.

Together with previous prime (109430179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83887281 + 25542916 = 9159^2 + 5054^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109430197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109430897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54715098 + 54715099.

It is an arithmetic number, because the mean of its divisors is an integer number (54715099).

Almost surely, 2^109430197 is an apocalyptic number.

It is an amenable number.

109430197 is a deficient number, since it is larger than the sum of its proper divisors (1).

109430197 is an equidigital number, since it uses as much as digits as its factorization.

109430197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 109430197 is about 10460.8889201635. Note that the first 3 decimals coincide. The cubic root of 109430197 is about 478.3132302116.

The spelling of 109430197 in words is "one hundred nine million, four hundred thirty thousand, one hundred ninety-seven".