109219427 has 2 divisors, whose sum is σ = 109219428. Its totient is φ = 109219426.

The previous prime is 109219403. The next prime is 109219457. The reversal of 109219427 is 724912901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109219427 - 2⁸ = 109219171 is a prime.

It is not a weakly prime, because it can be changed into another prime (109219457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54609713 + 54609714.

It is an arithmetic number, because the mean of its divisors is an integer number (54609714).

Almost surely, 2^109219427 is an apocalyptic number.

109219427 is a deficient number, since it is larger than the sum of its proper divisors (1).

109219427 is an equidigital number, since it uses as much as digits as its factorization.

109219427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 109219427 is about 10450.8098729237. The cubic root of 109219427 is about 478.0059449084.

The spelling of 109219427 in words is "one hundred nine million, two hundred nineteen thousand, four hundred twenty-seven".