999559117 has 8 divisors (see below), whose sum is σ = 1005931520. Its totient is φ = 993202560.

The previous prime is 999559073. The next prime is 999559157. The reversal of 999559117 is 711955999.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999559117 is a prime.

It is a pancake number, because a pancake can be divided into 999559117 parts by 44711 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999559157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138484 + ... + 145522.

It is an arithmetic number, because the mean of its divisors is an integer number (125741440).

Almost surely, 2^999559117 is an apocalyptic number.

It is an amenable number.

999559117 is a deficient number, since it is larger than the sum of its proper divisors (6372403).

999559117 is a wasteful number, since it uses less digits than its factorization.

999559117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7923.

The product of its digits is 1148175, while the sum is 55.

The square root of 999559117 is about 31615.8048608603. The cubic root of 999559117 is about 999.8530173972.

The spelling of 999559117 in words is "nine hundred ninety-nine million, five hundred fifty-nine thousand, one hundred seventeen".