109642829 has 2 divisors, whose sum is σ = 109642830. Its totient is φ = 109642828.

The previous prime is 109642811. The next prime is 109642853. The reversal of 109642829 is 928246901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103022500 + 6620329 = 10150^2 + 2573^2 .

It is an emirp because it is prime and its reverse (928246901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109642829 - 2²⁴ = 92865613 is a prime.

It is a super-2 number, since 2×109642829² = 24043099902246482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109642889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54821414 + 54821415.

It is an arithmetic number, because the mean of its divisors is an integer number (54821415).

Almost surely, 2^109642829 is an apocalyptic number.

It is an amenable number.

109642829 is a deficient number, since it is larger than the sum of its proper divisors (1).

109642829 is an equidigital number, since it uses as much as digits as its factorization.

109642829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 109642829 is about 10471.0471778137. The cubic root of 109642829 is about 478.6228306053.

The spelling of 109642829 in words is "one hundred nine million, six hundred forty-two thousand, eight hundred twenty-nine".