309829086 has 48 divisors (see below), whose sum is σ = 807580800. Its totient is φ = 83862864.

The previous prime is 309829081. The next prime is 309829099. The reversal of 309829086 is 680928903.

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 23 ways as a sum of consecutive naturals, for example, 62316 + ... + 67103.

It is an arithmetic number, because the mean of its divisors is an integer number (16824600).

Almost surely, 2^309829086 is an apocalyptic number.

309829086 is an abundant number, since it is smaller than the sum of its proper divisors (497751714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

309829086 is a wasteful number, since it uses less digits than its factorization.

309829086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129453 (or 129450 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 309829086 is about 17601.9625610328. The cubic root of 309829086 is about 676.6655429081.

The spelling of 309829086 in words is "three hundred nine million, eight hundred twenty-nine thousand, eighty-six".