809481 has 8 divisors (see below), whose sum is σ = 1102464. Its totient is φ = 528080.

The previous prime is 809461. The next prime is 809491. The reversal of 809481 is 184908.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 809481 - 2¹³ = 801289 is a prime.

It is a super-2 number, since 2×809481² = 1310518978722, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 809481.

It is not an unprimeable number, because it can be changed into a prime (809401) 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, 2730 + ... + 3011.

It is an arithmetic number, because the mean of its divisors is an integer number (137808).

2⁸⁰⁹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

809481 is a deficient number, since it is larger than the sum of its proper divisors (292983).

809481 is a wasteful number, since it uses less digits than its factorization.

809481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 809481 is about 899.7116204651. The cubic root of 809481 is about 93.1970616203.

The spelling of 809481 in words is "eight hundred nine thousand, four hundred eighty-one".