913340809 has 4 divisors (see below), whose sum is σ = 915521040. Its totient is φ = 911160580.

The previous prime is 913340803. The next prime is 913340821. The reversal of 913340809 is 908043319.

913340809 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 not a de Polignac number, because 913340809 - 2¹³ = 913332617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (913340803) 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, 1089487 + ... + 1090324.

It is an arithmetic number, because the mean of its divisors is an integer number (228880260).

Almost surely, 2^913340809 is an apocalyptic number.

It is an amenable number.

913340809 is a deficient number, since it is larger than the sum of its proper divisors (2180231).

913340809 is a wasteful number, since it uses less digits than its factorization.

913340809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180230.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 913340809 is about 30221.5288991143. The cubic root of 913340809 is about 970.2365275042.

The spelling of 913340809 in words is "nine hundred thirteen million, three hundred forty thousand, eight hundred nine".