999499918975487 has 8 divisors (see below), whose sum is σ = 1092432549013632. Its totient is φ = 910360457510400.

The previous prime is 999499918975447. The next prime is 999499918975507. The reversal of 999499918975487 is 784579819994999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999499918975487 - 2²⁴ = 999499902198271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999499918975447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948292142714 + ... + 948292143767.

It is an arithmetic number, because the mean of its divisors is an integer number (136554068626704).

Almost surely, 2^{999499918975487} is an apocalyptic number.

999499918975487 is a deficient number, since it is larger than the sum of its proper divisors (92932630038145).

999499918975487 is a wasteful number, since it uses less digits than its factorization.

999499918975487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896584286529.

The product of its digits is 1199951262720, while the sum is 107.

The spelling of 999499918975487 in words is "nine hundred ninety-nine trillion, four hundred ninety-nine billion, nine hundred eighteen million, nine hundred seventy-five thousand, four hundred eighty-seven".