835530209 has 4 divisors (see below), whose sum is σ = 840146580. Its totient is φ = 830913840.

The previous prime is 835530193. The next prime is 835530217. The reversal of 835530209 is 902035538.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34810000 + 800720209 = 5900^2 + 28297^2 .

It is a cyclic number.

It is not a de Polignac number, because 835530209 - 2⁴ = 835530193 is a prime.

It is a super-2 number, since 2×835530209² = 1396221460303167362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (835530299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2307914 + ... + 2308275.

It is an arithmetic number, because the mean of its divisors is an integer number (210036645).

Almost surely, 2^835530209 is an apocalyptic number.

It is an amenable number.

835530209 is a deficient number, since it is larger than the sum of its proper divisors (4616371).

835530209 is a wasteful number, since it uses less digits than its factorization.

835530209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4616370.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 835530209 is about 28905.5394172121. The cubic root of 835530209 is about 941.8622389348.

The spelling of 835530209 in words is "eight hundred thirty-five million, five hundred thirty thousand, two hundred nine".