898221893 has 2 divisors, whose sum is σ = 898221894. Its totient is φ = 898221892.

The previous prime is 898221887. The next prime is 898221913. The reversal of 898221893 is 398122898.

898221893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498941569 + 399280324 = 22337^2 + 19982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-898221893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898221833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449110946 + 449110947.

It is an arithmetic number, because the mean of its divisors is an integer number (449110947).

Almost surely, 2^898221893 is an apocalyptic number.

It is an amenable number.

898221893 is a deficient number, since it is larger than the sum of its proper divisors (1).

898221893 is an equidigital number, since it uses as much as digits as its factorization.

898221893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 50.

The square root of 898221893 is about 29970.3502315205. The cubic root of 898221893 is about 964.8531345126.

The spelling of 898221893 in words is "eight hundred ninety-eight million, two hundred twenty-one thousand, eight hundred ninety-three".