996470989 has 2 divisors, whose sum is σ = 996470990. Its totient is φ = 996470988.

The previous prime is 996470987. The next prime is 996471029. The reversal of 996470989 is 989074699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731269764 + 265201225 = 27042^2 + 16285^2 .

It is an emirp because it is prime and its reverse (989074699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 996470989 - 2¹ = 996470987 is a prime.

Together with 996470987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (996470987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498235494 + 498235495.

It is an arithmetic number, because the mean of its divisors is an integer number (498235495).

Almost surely, 2^996470989 is an apocalyptic number.

It is an amenable number.

996470989 is a deficient number, since it is larger than the sum of its proper divisors (1).

996470989 is an equidigital number, since it uses as much as digits as its factorization.

996470989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8817984, while the sum is 61.

The square root of 996470989 is about 31566.9287229531. The cubic root of 996470989 is about 998.8222765119.

The spelling of 996470989 in words is "nine hundred ninety-six million, four hundred seventy thousand, nine hundred eighty-nine".