999999575 has 6 divisors (see below), whose sum is σ = 1239999504. Its totient is φ = 799999640.

The previous prime is 999999541. The next prime is 999999587. The reversal of 999999575 is 575999999.

It is not a de Polignac number, because 999999575 - 2²⁰ = 998950999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999999499 and 999999508.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 19999967 + ... + 20000016.

It is an arithmetic number, because the mean of its divisors is an integer number (206666584).

Almost surely, 2^999999575 is an apocalyptic number.

999999575 is a deficient number, since it is larger than the sum of its proper divisors (239999929).

999999575 is a wasteful number, since it uses less digits than its factorization.

999999575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39999993 (or 39999988 counting only the distinct ones).

The product of its digits is 93002175, while the sum is 71.

The square root of 999999575 is about 31622.7698818431. The cubic root of 999999575 is about 999.9998583333. Note that the first 3 decimals are identical.

The spelling of 999999575 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, five hundred seventy-five".