475239999 has 24 divisors (see below), whose sum is σ = 702134400. Its totient is φ = 285640992.

The previous prime is 475239997. The next prime is 475240021. The reversal of 475239999 is 999932574.

It is a Cunningham number, because it is equal to 21800²-1.

It is not a de Polignac number, because 475239999 - 2¹ = 475239997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475239997) 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 23 ways as a sum of consecutive naturals, for example, 10902 + ... + 32700.

It is an arithmetic number, because the mean of its divisors is an integer number (29255600).

Almost surely, 2^475239999 is an apocalyptic number.

475239999 is a deficient number, since it is larger than the sum of its proper divisors (226894401).

475239999 is a wasteful number, since it uses less digits than its factorization.

475239999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21871 (or 21858 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 57.

The square root of 475239999 is about 21799.9999770642. Note that the first 4 decimals coincide. The cubic root of 475239999 is about 780.3767624281.

The spelling of 475239999 in words is "four hundred seventy-five million, two hundred thirty-nine thousand, nine hundred ninety-nine".