209089482839 has 4 divisors (see below), whose sum is σ = 209250694224. Its totient is φ = 208928271456.

The previous prime is 209089482827. The next prime is 209089482869. The reversal of 209089482839 is 938284980902.

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 209089482839 - 2¹² = 209089478743 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 (209089482869) 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, 80603747 + ... + 80606340.

It is an arithmetic number, because the mean of its divisors is an integer number (52312673556).

Almost surely, 2^209089482839 is an apocalyptic number.

209089482839 is a deficient number, since it is larger than the sum of its proper divisors (161211385).

209089482839 is a wasteful number, since it uses less digits than its factorization.

209089482839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161211384.

The product of its (nonzero) digits is 17915904, while the sum is 62.

The spelling of 209089482839 in words is "two hundred nine billion, eighty-nine million, four hundred eighty-two thousand, eight hundred thirty-nine".