109198379 has 2 divisors, whose sum is σ = 109198380. Its totient is φ = 109198378.

The previous prime is 109198373. The next prime is 109198387. The reversal of 109198379 is 973891901.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109198379 - 2²⁰ = 108149803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109198373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54599189 + 54599190.

It is an arithmetic number, because the mean of its divisors is an integer number (54599190).

Almost surely, 2^109198379 is an apocalyptic number.

109198379 is a deficient number, since it is larger than the sum of its proper divisors (1).

109198379 is an equidigital number, since it uses as much as digits as its factorization.

109198379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 109198379 is about 10449.8028211062. The cubic root of 109198379 is about 477.9752369541.

The spelling of 109198379 in words is "one hundred nine million, one hundred ninety-eight thousand, three hundred seventy-nine".