999996749 has 2 divisors, whose sum is σ = 999996750. Its totient is φ = 999996748.

The previous prime is 999996727. The next prime is 999996779. The reversal of 999996749 is 947699999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 682515625 + 317481124 = 26125^2 + 17818^2 .

It is a cyclic number.

It is not a de Polignac number, because 999996749 - 2⁸ = 999996493 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 (999996709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499998374 + 499998375.

It is an arithmetic number, because the mean of its divisors is an integer number (499998375).

Almost surely, 2^999996749 is an apocalyptic number.

It is an amenable number.

999996749 is a deficient number, since it is larger than the sum of its proper divisors (1).

999996749 is an equidigital number, since it uses as much as digits as its factorization.

999996749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89282088, while the sum is 71.

The square root of 999996749 is about 31622.7251988186. The cubic root of 999996749 is about 999.9989163322.

The spelling of 999996749 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, seven hundred forty-nine".