309829085 has 8 divisors (see below), whose sum is σ = 372992256. Its totient is φ = 247065040.

The previous prime is 309829081. The next prime is 309829099. The reversal of 309829085 is 580928903.

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

It is not a de Polignac number, because 309829085 - 2² = 309829081 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309829081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98069 + ... + 101178.

It is an arithmetic number, because the mean of its divisors is an integer number (46624032).

Almost surely, 2^309829085 is an apocalyptic number.

It is an amenable number.

309829085 is a deficient number, since it is larger than the sum of its proper divisors (63163171).

309829085 is a wasteful number, since it uses less digits than its factorization.

309829085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199563.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 309829085 is about 17601.9625326269. The cubic root of 309829085 is about 676.6655421801.

The spelling of 309829085 in words is "three hundred nine million, eight hundred twenty-nine thousand, eighty-five".