209214071 has 16 divisors (see below), whose sum is σ = 236390400. Its totient is φ = 183439200.

The previous prime is 209214037. The next prime is 209214077. The reversal of 209214071 is 170412902.

It is a cyclic number.

It is not a de Polignac number, because 209214071 - 2¹⁴ = 209197687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 209214071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209214077) 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, 121565 + ... + 123273.

It is an arithmetic number, because the mean of its divisors is an integer number (14774400).

Almost surely, 2^209214071 is an apocalyptic number.

209214071 is a deficient number, since it is larger than the sum of its proper divisors (27176329).

209214071 is a wasteful number, since it uses less digits than its factorization.

209214071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 209214071 is about 14464.2342002610. The cubic root of 209214071 is about 593.6497602747.

Adding to 209214071 its reverse (170412902), we get a palindrome (379626973).

The spelling of 209214071 in words is "two hundred nine million, two hundred fourteen thousand, seventy-one".