247940017 has 8 divisors (see below), whose sum is σ = 267137024. Its totient is φ = 228760848.

The previous prime is 247940003. The next prime is 247940039. The reversal of 247940017 is 710049742.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 247940017 - 2¹⁵ = 247907249 is a prime.

It is a super-2 number, since 2×247940017² = 122948504059920578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247940117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43918 + ... + 49240.

It is an arithmetic number, because the mean of its divisors is an integer number (33392128).

Almost surely, 2^247940017 is an apocalyptic number.

It is an amenable number.

247940017 is a deficient number, since it is larger than the sum of its proper divisors (19197007).

247940017 is a wasteful number, since it uses less digits than its factorization.

247940017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8919.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 247940017 is about 15746.1111706986. Note that the first 4 decimals coincide. The cubic root of 247940017 is about 628.2254733199.

Adding to 247940017 its reverse (710049742), we get a palindrome (957989759).

The spelling of 247940017 in words is "two hundred forty-seven million, nine hundred forty thousand, seventeen".