809450 has 12 divisors (see below), whose sum is σ = 1505670. Its totient is φ = 323760.

The previous prime is 809447. The next prime is 809453. The reversal of 809450 is 54908.

It is an interprime number because it is at equal distance from previous prime (809447) and next prime (809453).

It can be written as a sum of positive squares in 3 ways, for example, as 591361 + 218089 = 769^2 + 467^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (809453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8045 + ... + 8144.

2⁸⁰⁹⁴⁵⁰ is an apocalyptic number.

809450 is a deficient number, since it is larger than the sum of its proper divisors (696220).

809450 is a wasteful number, since it uses less digits than its factorization.

809450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16201 (or 16196 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 809450 is about 899.6943925578. The cubic root of 809450 is about 93.1958719091.

The spelling of 809450 in words is "eight hundred nine thousand, four hundred fifty".