209068417 has 4 divisors (see below), whose sum is σ = 210129876. Its totient is φ = 208006960.

The previous prime is 209068399. The next prime is 209068427. The reversal of 209068417 is 714860902.

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 207388801 + 1679616 = 14401^2 + 1296^2 .

It is a cyclic number.

It is not a de Polignac number, because 209068417 - 2²⁷ = 74850689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209068427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530434 + ... + 530827.

It is an arithmetic number, because the mean of its divisors is an integer number (52532469).

Almost surely, 2^209068417 is an apocalyptic number.

It is an amenable number.

209068417 is a deficient number, since it is larger than the sum of its proper divisors (1061459).

209068417 is a wasteful number, since it uses less digits than its factorization.

209068417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061458.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 209068417 is about 14459.1983526059. The cubic root of 209068417 is about 593.5119627616.

It can be divided in two parts, 2090 and 68417, that added together give a palindrome (70507).

The spelling of 209068417 in words is "two hundred nine million, sixty-eight thousand, four hundred seventeen".