899273321 has 2 divisors, whose sum is σ = 899273322. Its totient is φ = 899273320.

The previous prime is 899273299. The next prime is 899273359. The reversal of 899273321 is 123372998.

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., 705646096 + 193627225 = 26564^2 + 13915^2 .

It is a cyclic number.

It is not a de Polignac number, because 899273321 - 2⁶ = 899273257 is a prime.

It is not a weakly prime, because it can be changed into another prime (899273371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449636660 + 449636661.

It is an arithmetic number, because the mean of its divisors is an integer number (449636661).

Almost surely, 2^899273321 is an apocalyptic number.

It is an amenable number.

899273321 is a deficient number, since it is larger than the sum of its proper divisors (1).

899273321 is an equidigital number, since it uses as much as digits as its factorization.

899273321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 899273321 is about 29987.8862376127. The cubic root of 899273321 is about 965.2294624670.

The spelling of 899273321 in words is "eight hundred ninety-nine million, two hundred seventy-three thousand, three hundred twenty-one".