984923789 has 2 divisors, whose sum is σ = 984923790. Its totient is φ = 984923788.

The previous prime is 984923701. The next prime is 984923803. The reversal of 984923789 is 987329489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 847799689 + 137124100 = 29117^2 + 11710^2 .

It is a cyclic number.

It is not a de Polignac number, because 984923789 - 2²⁰ = 983875213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (984923189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492461894 + 492461895.

It is an arithmetic number, because the mean of its divisors is an integer number (492461895).

Almost surely, 2^984923789 is an apocalyptic number.

It is an amenable number.

984923789 is a deficient number, since it is larger than the sum of its proper divisors (1).

984923789 is an equidigital number, since it uses as much as digits as its factorization.

984923789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 59.

The square root of 984923789 is about 31383.4954872780. The cubic root of 984923789 is about 994.9491279766.

The spelling of 984923789 in words is "nine hundred eighty-four million, nine hundred twenty-three thousand, seven hundred eighty-nine".