209484845239 has 6 divisors (see below), whose sum is σ = 210265414736. Its totient is φ = 208704331620.

The previous prime is 209484845233. The next prime is 209484845267. The reversal of 209484845239 is 932548484902.

It is not a de Polignac number, because 209484845239 - 2⁷ = 209484845111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209484845233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7520712 + ... + 7548514.

Almost surely, 2^209484845239 is an apocalyptic number.

209484845239 is a deficient number, since it is larger than the sum of its proper divisors (780569497).

209484845239 is an frugal number, since it uses more digits than its factorization.

209484845239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55877 (or 28074 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 209484845239 in words is "two hundred nine billion, four hundred eighty-four million, eight hundred forty-five thousand, two hundred thirty-nine".