475392921 has 16 divisors (see below), whose sum is σ = 653094144. Its totient is φ = 307430144.

The previous prime is 475392919. The next prime is 475392937. The reversal of 475392921 is 129293574.

It is a cyclic number.

It is not a de Polignac number, because 475392921 - 2¹ = 475392919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (475392941) 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 15 ways as a sum of consecutive naturals, for example, 1015 + ... + 30851.

It is an arithmetic number, because the mean of its divisors is an integer number (40818384).

Almost surely, 2^475392921 is an apocalyptic number.

It is an amenable number.

475392921 is a deficient number, since it is larger than the sum of its proper divisors (177701223).

475392921 is a wasteful number, since it uses less digits than its factorization.

475392921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30000.

The product of its digits is 136080, while the sum is 42.

The square root of 475392921 is about 21803.5070802841. The cubic root of 475392921 is about 780.4604562654.

The spelling of 475392921 in words is "four hundred seventy-five million, three hundred ninety-two thousand, nine hundred twenty-one".