809402 has 8 divisors (see below), whose sum is σ = 1324512. Its totient is φ = 367900.

The previous prime is 809401. The next prime is 809407. The reversal of 809402 is 204908.

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

It is not an unprimeable number, because it can be changed into a prime (809401) 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 3 ways as a sum of consecutive naturals, for example, 18374 + ... + 18417.

It is an arithmetic number, because the mean of its divisors is an integer number (165564).

2⁸⁰⁹⁴⁰² is an apocalyptic number.

809402 is a deficient number, since it is larger than the sum of its proper divisors (515110).

809402 is a wasteful number, since it uses less digits than its factorization.

809402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36804.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 809402 is about 899.6677164376. The cubic root of 809402 is about 93.1940297157.

The spelling of 809402 in words is "eight hundred nine thousand, four hundred two".