9773989 has 2 divisors, whose sum is σ = 9773990. Its totient is φ = 9773988.

The previous prime is 9773983. The next prime is 9773993. The reversal of 9773989 is 9893779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5904900 + 3869089 = 2430^2 + 1967^2 .

It is a cyclic number.

It is not a de Polignac number, because 9773989 - 2¹⁹ = 9249701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9773983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4886994 + 4886995.

It is an arithmetic number, because the mean of its divisors is an integer number (4886995).

Almost surely, 2^9773989 is an apocalyptic number.

It is an amenable number.

9773989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9773989 is an equidigital number, since it uses as much as digits as its factorization.

9773989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 52.

The square root of 9773989 is about 3126.3379535808. The cubic root of 9773989 is about 213.8079988070.

The spelling of 9773989 in words is "nine million, seven hundred seventy-three thousand, nine hundred eighty-nine".