898435823 has 2 divisors, whose sum is σ = 898435824. Its totient is φ = 898435822.

The previous prime is 898435819. The next prime is 898435841. The reversal of 898435823 is 328534898.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 898435823 - 2² = 898435819 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898435423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449217911 + 449217912.

It is an arithmetic number, because the mean of its divisors is an integer number (449217912).

Almost surely, 2^898435823 is an apocalyptic number.

898435823 is a deficient number, since it is larger than the sum of its proper divisors (1).

898435823 is an equidigital number, since it uses as much as digits as its factorization.

898435823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 50.

The square root of 898435823 is about 29973.9190463977. The cubic root of 898435823 is about 964.9297282986.

The spelling of 898435823 in words is "eight hundred ninety-eight million, four hundred thirty-five thousand, eight hundred twenty-three".