34445209 has 4 divisors (see below), whose sum is σ = 34457104. Its totient is φ = 34433316.

The previous prime is 34445197. The next prime is 34445239. The reversal of 34445209 is 90254443.

It is a happy number.

34445209 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90254443 = 4441 ⋅20323.

It is a cyclic number.

It is not a de Polignac number, because 34445209 - 2¹¹ = 34443161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34445239) 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 3 ways as a sum of consecutive naturals, for example, 1534 + ... + 8440.

It is an arithmetic number, because the mean of its divisors is an integer number (8614276).

Almost surely, 2^34445209 is an apocalyptic number.

It is an amenable number.

34445209 is a deficient number, since it is larger than the sum of its proper divisors (11895).

34445209 is an equidigital number, since it uses as much as digits as its factorization.

34445209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11894.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 34445209 is about 5869.0040892812. The cubic root of 34445209 is about 325.3690765685.

The spelling of 34445209 in words is "thirty-four million, four hundred forty-five thousand, two hundred nine".