999473 has 4 divisors (see below), whose sum is σ = 1003620. Its totient is φ = 995328.

The previous prime is 999451. The next prime is 999491. The reversal of 999473 is 374999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 889249 + 110224 = 943^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 999473 - 2⁸ = 999217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 999473.

It is not an unprimeable number, because it can be changed into a prime (999433) 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, 1688 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (250905).

2⁹⁹⁹⁴⁷³ is an apocalyptic number.

It is an amenable number.

999473 is a deficient number, since it is larger than the sum of its proper divisors (4147).

999473 is a wasteful number, since it uses less digits than its factorization.

999473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146.

The product of its digits is 61236, while the sum is 41.

The square root of 999473 is about 999.7364652747. The cubic root of 999473 is about 99.9824302466.

The spelling of 999473 in words is "nine hundred ninety-nine thousand, four hundred seventy-three".