899330321 has 2 divisors, whose sum is σ = 899330322. Its totient is φ = 899330320.

The previous prime is 899330317. The next prime is 899330329. The reversal of 899330321 is 123033998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 859134721 + 40195600 = 29311^2 + 6340^2 .

It is a cyclic number.

It is not a de Polignac number, because 899330321 - 2² = 899330317 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (899330329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449665160 + 449665161.

It is an arithmetic number, because the mean of its divisors is an integer number (449665161).

Almost surely, 2^899330321 is an apocalyptic number.

It is an amenable number.

899330321 is a deficient number, since it is larger than the sum of its proper divisors (1).

899330321 is an equidigital number, since it uses as much as digits as its factorization.

899330321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 899330321 is about 29988.8366063107. The cubic root of 899330321 is about 965.2498555687.

The spelling of 899330321 in words is "eight hundred ninety-nine million, three hundred thirty thousand, three hundred twenty-one".