109429 has 8 divisors (see below), whose sum is σ = 119448. Its totient is φ = 99840.

The previous prime is 109423. The next prime is 109433. The reversal of 109429 is 924901.

It can be written as a sum of positive squares in 4 ways, for example, as 2500 + 106929 = 50^2 + 327^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109429 - 2⁵ = 109397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619 + ... + 775.

It is an arithmetic number, because the mean of its divisors is an integer number (14931).

2¹⁰⁹⁴²⁹ is an apocalyptic number.

It is an amenable number.

109429 is a deficient number, since it is larger than the sum of its proper divisors (10019).

109429 is a wasteful number, since it uses less digits than its factorization.

109429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 109429 is about 330.8005441350. The cubic root of 109429 is about 47.8311486199.

The spelling of 109429 in words is "one hundred nine thousand, four hundred twenty-nine".