320929487 has 8 divisors (see below), whose sum is σ = 326308176. Its totient is φ = 315595072.

The previous prime is 320929459. The next prime is 320929493. The reversal of 320929487 is 784929023.

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 320929487 - 2⁶ = 320929423 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 (320929387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3713 + ... + 25605.

It is an arithmetic number, because the mean of its divisors is an integer number (40788522).

Almost surely, 2^320929487 is an apocalyptic number.

320929487 is a deficient number, since it is larger than the sum of its proper divisors (5378689).

320929487 is a wasteful number, since it uses less digits than its factorization.

320929487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22137.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 320929487 is about 17914.5049331540. The cubic root of 320929487 is about 684.6519886744.

The spelling of 320929487 in words is "three hundred twenty million, nine hundred twenty-nine thousand, four hundred eighty-seven".