899938229 has 2 divisors, whose sum is σ = 899938230. Its totient is φ = 899938228.

The previous prime is 899938201. The next prime is 899938243. The reversal of 899938229 is 922839998.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656640625 + 243297604 = 25625^2 + 15598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-899938229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899938279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449969114 + 449969115.

It is an arithmetic number, because the mean of its divisors is an integer number (449969115).

Almost surely, 2^899938229 is an apocalyptic number.

It is an amenable number.

899938229 is a deficient number, since it is larger than the sum of its proper divisors (1).

899938229 is an equidigital number, since it uses as much as digits as its factorization.

899938229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 59.

The square root of 899938229 is about 29998.9704656677. The cubic root of 899938229 is about 965.4672954911.

The spelling of 899938229 in words is "eight hundred ninety-nine million, nine hundred thirty-eight thousand, two hundred twenty-nine".