989430097 has 2 divisors, whose sum is σ = 989430098. Its totient is φ = 989430096.

The previous prime is 989430089. The next prime is 989430109. The reversal of 989430097 is 790034989.

989430097 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., 523906321 + 465523776 = 22889^2 + 21576^2 .

It is a cyclic number.

It is not a de Polignac number, because 989430097 - 2³ = 989430089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 989430097.

It is not a weakly prime, because it can be changed into another prime (989430047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494715048 + 494715049.

It is an arithmetic number, because the mean of its divisors is an integer number (494715049).

Almost surely, 2^989430097 is an apocalyptic number.

It is an amenable number.

989430097 is a deficient number, since it is larger than the sum of its proper divisors (1).

989430097 is an equidigital number, since it uses as much as digits as its factorization.

989430097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 989430097 is about 31455.2077882185. The cubic root of 989430097 is about 996.4642119373.

The spelling of 989430097 in words is "nine hundred eighty-nine million, four hundred thirty thousand, ninety-seven".