999416889827 has 4 divisors (see below), whose sum is σ = 999484337136. Its totient is φ = 999349442520.

The previous prime is 999416889781. The next prime is 999416889829. The reversal of 999416889827 is 728988614999.

It is a happy number.

999416889827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 999416889827 - 2⁶ = 999416889763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999416889829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33701423 + ... + 33731064.

It is an arithmetic number, because the mean of its divisors is an integer number (249871084284).

Almost surely, 2^999416889827 is an apocalyptic number.

999416889827 is a deficient number, since it is larger than the sum of its proper divisors (67447309).

999416889827 is a wasteful number, since it uses less digits than its factorization.

999416889827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67447308.

The product of its digits is 1128701952, while the sum is 80.

The spelling of 999416889827 in words is "nine hundred ninety-nine billion, four hundred sixteen million, eight hundred eighty-nine thousand, eight hundred twenty-seven".