999747967 has 2 divisors, whose sum is σ = 999747968. Its totient is φ = 999747966.

The previous prime is 999747953. The next prime is 999747989. The reversal of 999747967 is 769747999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999747967 - 2⁷ = 999747839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999747167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499873983 + 499873984.

It is an arithmetic number, because the mean of its divisors is an integer number (499873984).

Almost surely, 2^999747967 is an apocalyptic number.

999747967 is a deficient number, since it is larger than the sum of its proper divisors (1).

999747967 is an equidigital number, since it uses as much as digits as its factorization.

999747967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54010152, while the sum is 67.

The square root of 999747967 is about 31618.7913589372. The cubic root of 999747967 is about 999.9159819412.

The spelling of 999747967 in words is "nine hundred ninety-nine million, seven hundred forty-seven thousand, nine hundred sixty-seven".