239069168809 has 3 divisors (see below), whose sum is σ = 239069657757. Its totient is φ = 239068679862.

The previous prime is 239069168717. The next prime is 239069168837. The reversal of 239069168809 is 908861960932.

The square root of 239069168809 is 488947.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 239069168809 - 2¹⁵ = 239069136041 is a prime.

It is a super-2 number, since 2×239069168809² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239069168839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 244474 + ... + 733420.

It is an arithmetic number, because the mean of its divisors is an integer number (79689885919).

Almost surely, 2^239069168809 is an apocalyptic number.

239069168809 is the 488947-th square number.

239069168809 is the 244474-th centered octagonal number.

It is an amenable number.

239069168809 is a deficient number, since it is larger than the sum of its proper divisors (488948).

239069168809 is an frugal number, since it uses more digits than its factorization.

239069168809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977894 (or 488947 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 61.

The spelling of 239069168809 in words is "two hundred thirty-nine billion, sixty-nine million, one hundred sixty-eight thousand, eight hundred nine".