109427429 has 2 divisors, whose sum is σ = 109427430. Its totient is φ = 109427428.

The previous prime is 109427413. The next prime is 109427431. The reversal of 109427429 is 924724901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84676804 + 24750625 = 9202^2 + 4975^2 .

It is an emirp because it is prime and its reverse (924724901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109427429 - 2⁴ = 109427413 is a prime.

Together with 109427431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 109427392 and 109427401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109427029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54713714 + 54713715.

It is an arithmetic number, because the mean of its divisors is an integer number (54713715).

Almost surely, 2^109427429 is an apocalyptic number.

It is an amenable number.

109427429 is a deficient number, since it is larger than the sum of its proper divisors (1).

109427429 is an equidigital number, since it uses as much as digits as its factorization.

109427429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 109427429 is about 10460.7566169948. The cubic root of 109427429 is about 478.3091972535.

The spelling of 109427429 in words is "one hundred nine million, four hundred twenty-seven thousand, four hundred twenty-nine".