809734 has 8 divisors (see below), whose sum is σ = 1237680. Its totient is φ = 397176.

The previous prime is 809729. The next prime is 809737. The reversal of 809734 is 437908.

It is a happy number.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 809696 and 809705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809737) by changing a digit.

809734 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3714 + ... + 3925.

It is an arithmetic number, because the mean of its divisors is an integer number (154710).

2⁸⁰⁹⁷³⁴ is an apocalyptic number.

809734 is a deficient number, since it is larger than the sum of its proper divisors (427946).

809734 is a wasteful number, since it uses less digits than its factorization.

809734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7694.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 809734 is about 899.8522100879. The cubic root of 809734 is about 93.2067700633.

The spelling of 809734 in words is "eight hundred nine thousand, seven hundred thirty-four".