475989 has 4 divisors (see below), whose sum is σ = 634656. Its totient is φ = 317324.

The previous prime is 475973. The next prime is 475991. The reversal of 475989 is 989574.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 475989 - 2⁴ = 475973 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 475989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475289) 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, 79329 + ... + 79334.

It is an arithmetic number, because the mean of its divisors is an integer number (158664).

2⁴⁷⁵⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

475989 is a deficient number, since it is larger than the sum of its proper divisors (158667).

475989 is a wasteful number, since it uses less digits than its factorization.

475989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158666.

The product of its digits is 90720, while the sum is 42.

The square root of 475989 is about 689.9195605286. The cubic root of 475989 is about 78.0786517623.

The spelling of 475989 in words is "four hundred seventy-five thousand, nine hundred eighty-nine".