898430989 has 2 divisors, whose sum is σ = 898430990. Its totient is φ = 898430988.

The previous prime is 898430969. The next prime is 898430999. The reversal of 898430989 is 989034898.

898430989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 762312100 + 136118889 = 27610^2 + 11667^2 .

It is a cyclic number.

It is not a de Polignac number, because 898430989 - 2⁷ = 898430861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898430959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449215494 + 449215495.

It is an arithmetic number, because the mean of its divisors is an integer number (449215495).

Almost surely, 2^898430989 is an apocalyptic number.

It is an amenable number.

898430989 is a deficient number, since it is larger than the sum of its proper divisors (1).

898430989 is an equidigital number, since it uses as much as digits as its factorization.

898430989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The square root of 898430989 is about 29973.8384095197. The cubic root of 898430989 is about 964.9279977062.

The spelling of 898430989 in words is "eight hundred ninety-eight million, four hundred thirty thousand, nine hundred eighty-nine".