123829309 has 8 divisors (see below), whose sum is σ = 136814400. Its totient is φ = 111477696.

The previous prime is 123829297. The next prime is 123829319. The reversal of 123829309 is 903928321.

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 123829309 - 2¹¹ = 123827261 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 (123829319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157959 + ... + 158740.

It is an arithmetic number, because the mean of its divisors is an integer number (17101800).

Almost surely, 2^123829309 is an apocalyptic number.

It is an amenable number.

123829309 is a deficient number, since it is larger than the sum of its proper divisors (12985091).

123829309 is a wasteful number, since it uses less digits than its factorization.

123829309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316739.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 123829309 is about 11127.8618341530. The cubic root of 123829309 is about 498.4341802021.

The spelling of 123829309 in words is "one hundred twenty-three million, eight hundred twenty-nine thousand, three hundred nine".