34945209 has 16 divisors (see below), whose sum is σ = 55753600. Its totient is φ = 21504528.

The previous prime is 34945201. The next prime is 34945219. The reversal of 34945209 is 90254943.

It is not a de Polignac number, because 34945209 - 2³ = 34945201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34945201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49429 + ... + 50130.

It is an arithmetic number, because the mean of its divisors is an integer number (3484600).

Almost surely, 2^34945209 is an apocalyptic number.

34945209 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

34945209 is a deficient number, since it is larger than the sum of its proper divisors (20808391).

34945209 is a wasteful number, since it uses less digits than its factorization.

34945209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99581 (or 99575 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 34945209 is about 5911.4472847180. The cubic root of 34945209 is about 326.9358514011.

The spelling of 34945209 in words is "thirty-four million, nine hundred forty-five thousand, two hundred nine".