239450699569 has 3 divisors (see below), whose sum is σ = 239451188907. Its totient is φ = 239450210232.

The previous prime is 239450699461. The next prime is 239450699617. The reversal of 239450699569 is 965996054932.

The square root of 239450699569 is 489337.

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 can be written as a sum of positive squares in only one way, i.e., 128353810225 + 111096889344 = 358265^2 + 333312^2 .

It is not a de Polignac number, because 239450699569 - 2¹⁵ = 239450666801 is a prime.

It is a super-2 number, since 2×239450699569² (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 (239450693569) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 244669 + ... + 734005.

It is an arithmetic number, because the mean of its divisors is an integer number (79817062969).

Almost surely, 2^239450699569 is an apocalyptic number.

239450699569 is the 489337-th square number.

239450699569 is the 244669-th centered octagonal number.

It is an amenable number.

239450699569 is a deficient number, since it is larger than the sum of its proper divisors (489338).

239450699569 is an frugal number, since it uses more digits than its factorization.

239450699569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978674 (or 489337 counting only the distinct ones).

The product of its (nonzero) digits is 141717600, while the sum is 67.

The spelling of 239450699569 in words is "two hundred thirty-nine billion, four hundred fifty million, six hundred ninety-nine thousand, five hundred sixty-nine".