999963047 has 2 divisors, whose sum is σ = 999963048. Its totient is φ = 999963046.

The previous prime is 999962983. The next prime is 999963049. The reversal of 999963047 is 740369999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999963047 - 2⁶ = 999962983 is a prime.

Together with 999963049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 999962983 and 999963001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999963049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499981523 + 499981524.

It is an arithmetic number, because the mean of its divisors is an integer number (499981524).

Almost surely, 2^999963047 is an apocalyptic number.

999963047 is a deficient number, since it is larger than the sum of its proper divisors (1).

999963047 is an equidigital number, since it uses as much as digits as its factorization.

999963047 is an evil number, because the sum of its binary digits is even.

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

The square root of 999963047 is about 31622.1923180541. The cubic root of 999963047 is about 999.9876821816.

The spelling of 999963047 in words is "nine hundred ninety-nine million, nine hundred sixty-three thousand, forty-seven".