320693929 has 2 divisors, whose sum is σ = 320693930. Its totient is φ = 320693928.

The previous prime is 320693921. The next prime is 320693983. The reversal of 320693929 is 929396023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187060329 + 133633600 = 13677^2 + 11560^2 .

It is a cyclic number.

It is not a de Polignac number, because 320693929 - 2³ = 320693921 is a prime.

It is not a weakly prime, because it can be changed into another prime (320693921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160346964 + 160346965.

It is an arithmetic number, because the mean of its divisors is an integer number (160346965).

Almost surely, 2^320693929 is an apocalyptic number.

It is an amenable number.

320693929 is a deficient number, since it is larger than the sum of its proper divisors (1).

320693929 is an equidigital number, since it uses as much as digits as its factorization.

320693929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 320693929 is about 17907.9292214371. The cubic root of 320693929 is about 684.4844391724.

The spelling of 320693929 in words is "three hundred twenty million, six hundred ninety-three thousand, nine hundred twenty-nine".