209432234407 has 4 divisors (see below), whose sum is σ = 228471528456. Its totient is φ = 190392940360.

The previous prime is 209432234393. The next prime is 209432234441. The reversal of 209432234407 is 704432234902.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 209432234407 - 2³¹ = 207284750759 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 209432234407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209432234707) 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, 9519647008 + ... + 9519647029.

It is an arithmetic number, because the mean of its divisors is an integer number (57117882114).

Almost surely, 2^209432234407 is an apocalyptic number.

209432234407 is a deficient number, since it is larger than the sum of its proper divisors (19039294049).

209432234407 is a wasteful number, since it uses less digits than its factorization.

209432234407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19039294048.

The product of its (nonzero) digits is 290304, while the sum is 40.

The spelling of 209432234407 in words is "two hundred nine billion, four hundred thirty-two million, two hundred thirty-four thousand, four hundred seven".