320790229 has 4 divisors (see below), whose sum is σ = 320985484. Its totient is φ = 320594976.

The previous prime is 320790193. The next prime is 320790233. The reversal of 320790229 is 922097023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145757329 + 175032900 = 12073^2 + 13230^2 .

It is a cyclic number.

It is not a de Polignac number, because 320790229 - 2²⁵ = 287235797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320790194 and 320790203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320790329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95142 + ... + 98455.

It is an arithmetic number, because the mean of its divisors is an integer number (80246371).

Almost surely, 2^320790229 is an apocalyptic number.

It is an amenable number.

320790229 is a deficient number, since it is larger than the sum of its proper divisors (195255).

320790229 is a wasteful number, since it uses less digits than its factorization.

320790229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195254.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 320790229 is about 17910.6177727068. The cubic root of 320790229 is about 684.5529460868.

The spelling of 320790229 in words is "three hundred twenty million, seven hundred ninety thousand, two hundred twenty-nine".