473991 has 8 divisors (see below), whose sum is σ = 722304. Its totient is φ = 270840.

The previous prime is 473987. The next prime is 473999. The reversal of 473991 is 199374.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 473991 - 2² = 473987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (473999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11265 + ... + 11306.

It is an arithmetic number, because the mean of its divisors is an integer number (90288).

2⁴⁷³⁹⁹¹ is an apocalyptic number.

473991 is a deficient number, since it is larger than the sum of its proper divisors (248313).

473991 is a wasteful number, since it uses less digits than its factorization.

473991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22581.

The product of its digits is 6804, while the sum is 33.

The square root of 473991 is about 688.4700429213. The cubic root of 473991 is about 77.9692515225.

The spelling of 473991 in words is "four hundred seventy-three thousand, nine hundred ninety-one".