834566009 has 8 divisors (see below), whose sum is σ = 838111560. Its totient is φ = 831027456.

The previous prime is 834565987. The next prime is 834566039. The reversal of 834566009 is 900665438.

It can be written as a sum of positive squares in 4 ways, for example, as 222784 + 834343225 = 472^2 + 28885^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-834566009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (834566039) 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, 480707 + ... + 482439.

It is an arithmetic number, because the mean of its divisors is an integer number (104763945).

Almost surely, 2^834566009 is an apocalyptic number.

It is an amenable number.

834566009 is a deficient number, since it is larger than the sum of its proper divisors (3545551).

834566009 is a wasteful number, since it uses less digits than its factorization.

834566009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 834566009 is about 28888.8561386566. The cubic root of 834566009 is about 941.4997971715.

The spelling of 834566009 in words is "eight hundred thirty-four million, five hundred sixty-six thousand, nine".