999992647 has 2 divisors, whose sum is σ = 999992648. Its totient is φ = 999992646.

The previous prime is 999992641. The next prime is 999992677. The reversal of 999992647 is 746299999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999992647 - 2³ = 999992639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999992641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499996323 + 499996324.

It is an arithmetic number, because the mean of its divisors is an integer number (499996324).

Almost surely, 2^999992647 is an apocalyptic number.

999992647 is a deficient number, since it is larger than the sum of its proper divisors (1).

999992647 is an equidigital number, since it uses as much as digits as its factorization.

999992647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19840464, while the sum is 64.

The square root of 999992647 is about 31622.6603403319. The cubic root of 999992647 is about 999.9975489940.

The spelling of 999992647 in words is "nine hundred ninety-nine million, nine hundred ninety-two thousand, six hundred forty-seven".