898723961 has 2 divisors, whose sum is σ = 898723962. Its totient is φ = 898723960.

The previous prime is 898723939. The next prime is 898724003. The reversal of 898723961 is 169327898.

898723961 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., 642115600 + 256608361 = 25340^2 + 16019^2 .

It is a cyclic number.

It is not a de Polignac number, because 898723961 - 2⁶ = 898723897 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (898723901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449361980 + 449361981.

It is an arithmetic number, because the mean of its divisors is an integer number (449361981).

Almost surely, 2^898723961 is an apocalyptic number.

It is an amenable number.

898723961 is a deficient number, since it is larger than the sum of its proper divisors (1).

898723961 is an equidigital number, since it uses as much as digits as its factorization.

898723961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 53.

The square root of 898723961 is about 29978.7251396720. The cubic root of 898723961 is about 965.0328717090.

The spelling of 898723961 in words is "eight hundred ninety-eight million, seven hundred twenty-three thousand, nine hundred sixty-one".