109719397 has 2 divisors, whose sum is σ = 109719398. Its totient is φ = 109719396.

The previous prime is 109719391. The next prime is 109719413. The reversal of 109719397 is 793917901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94595076 + 15124321 = 9726^2 + 3889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109719397 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 (109719391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54859698 + 54859699.

It is an arithmetic number, because the mean of its divisors is an integer number (54859699).

Almost surely, 2^109719397 is an apocalyptic number.

It is an amenable number.

109719397 is a deficient number, since it is larger than the sum of its proper divisors (1).

109719397 is an equidigital number, since it uses as much as digits as its factorization.

109719397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107163, while the sum is 46.

The square root of 109719397 is about 10474.7027165452. The cubic root of 109719397 is about 478.7342185419.

The spelling of 109719397 in words is "one hundred nine million, seven hundred nineteen thousand, three hundred ninety-seven".