320899093 has 2 divisors, whose sum is σ = 320899094. Its totient is φ = 320899092.

The previous prime is 320899091. The next prime is 320899097. The reversal of 320899093 is 390998023.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318015889 + 2883204 = 17833^2 + 1698^2 .

It is a cyclic number.

It is not a de Polignac number, because 320899093 - 2¹ = 320899091 is a prime.

Together with 320899091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320899091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160449546 + 160449547.

It is an arithmetic number, because the mean of its divisors is an integer number (160449547).

Almost surely, 2^320899093 is an apocalyptic number.

It is an amenable number.

320899093 is a deficient number, since it is larger than the sum of its proper divisors (1).

320899093 is an equidigital number, since it uses as much as digits as its factorization.

320899093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 320899093 is about 17913.6566060645. The cubic root of 320899093 is about 684.6303744047.

The spelling of 320899093 in words is "three hundred twenty million, eight hundred ninety-nine thousand, ninety-three".