996963889 has 2 divisors, whose sum is σ = 996963890. Its totient is φ = 996963888.

The previous prime is 996963823. The next prime is 996963893. The reversal of 996963889 is 988369699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 932691600 + 64272289 = 30540^2 + 8017^2 .

It is a cyclic number.

It is not a de Polignac number, because 996963889 - 2²³ = 988575281 is a prime.

It is not a weakly prime, because it can be changed into another prime (996966889) 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, 498481944 + 498481945.

It is an arithmetic number, because the mean of its divisors is an integer number (498481945).

Almost surely, 2^996963889 is an apocalyptic number.

It is an amenable number.

996963889 is a deficient number, since it is larger than the sum of its proper divisors (1).

996963889 is an equidigital number, since it uses as much as digits as its factorization.

996963889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45349632, while the sum is 67.

The square root of 996963889 is about 31574.7349790936. The cubic root of 996963889 is about 998.9869370500.

The spelling of 996963889 in words is "nine hundred ninety-six million, nine hundred sixty-three thousand, eight hundred eighty-nine".