814734209 has 4 divisors (see below), whose sum is σ = 815349504. Its totient is φ = 814118916.

The previous prime is 814734169. The next prime is 814734211. The reversal of 814734209 is 902437418.

814734209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-814734209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814734229) 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, 305657 + ... + 308310.

It is an arithmetic number, because the mean of its divisors is an integer number (203837376).

Almost surely, 2^814734209 is an apocalyptic number.

It is an amenable number.

814734209 is a deficient number, since it is larger than the sum of its proper divisors (615295).

814734209 is a wasteful number, since it uses less digits than its factorization.

814734209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615294.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 814734209 is about 28543.5493413135. The cubic root of 814734209 is about 933.9823100214.

The spelling of 814734209 in words is "eight hundred fourteen million, seven hundred thirty-four thousand, two hundred nine".