834943509 has 6 divisors (see below), whose sum is σ = 1206029526. Its totient is φ = 556629000.

The previous prime is 834943433. The next prime is 834943523. The reversal of 834943509 is 905349438.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 778242609 + 56700900 = 27897^2 + 7530^2 .

It is not a de Polignac number, because 834943509 - 2⁷ = 834943381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834943589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46385742 + ... + 46385759.

It is an arithmetic number, because the mean of its divisors is an integer number (201004921).

Almost surely, 2^834943509 is an apocalyptic number.

It is an amenable number.

834943509 is a deficient number, since it is larger than the sum of its proper divisors (371086017).

834943509 is a wasteful number, since it uses less digits than its factorization.

834943509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92771507 (or 92771504 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 834943509 is about 28895.3890612326. The cubic root of 834943509 is about 941.6417322589.

The spelling of 834943509 in words is "eight hundred thirty-four million, nine hundred forty-three thousand, five hundred nine".