999994487 has 2 divisors, whose sum is σ = 999994488. Its totient is φ = 999994486.

The previous prime is 999994439. The next prime is 999994507. The reversal of 999994487 is 784499999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999994487 - 2⁶ = 999994423 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 (999994427) 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, 499997243 + 499997244.

It is an arithmetic number, because the mean of its divisors is an integer number (499997244).

Almost surely, 2^999994487 is an apocalyptic number.

999994487 is a deficient number, since it is larger than the sum of its proper divisors (1).

999994487 is an equidigital number, since it uses as much as digits as its factorization.

999994487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52907904, while the sum is 68.

The square root of 999994487 is about 31622.6894333800. The cubic root of 999994487 is about 999.9981623300.

The spelling of 999994487 in words is "nine hundred ninety-nine million, nine hundred ninety-four thousand, four hundred eighty-seven".