996397229 has 2 divisors, whose sum is σ = 996397230. Its totient is φ = 996397228.

The previous prime is 996397201. The next prime is 996397243. The reversal of 996397229 is 922793699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 919484329 + 76912900 = 30323^2 + 8770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-996397229 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 (996397249) 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, 498198614 + 498198615.

It is an arithmetic number, because the mean of its divisors is an integer number (498198615).

Almost surely, 2^996397229 is an apocalyptic number.

It is an amenable number.

996397229 is a deficient number, since it is larger than the sum of its proper divisors (1).

996397229 is an equidigital number, since it uses as much as digits as its factorization.

996397229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3306744, while the sum is 56.

The square root of 996397229 is about 31565.7603900175. The cubic root of 996397229 is about 998.7976312221.

The spelling of 996397229 in words is "nine hundred ninety-six million, three hundred ninety-seven thousand, two hundred twenty-nine".