247899017 has 2 divisors, whose sum is σ = 247899018. Its totient is φ = 247899016.

The previous prime is 247899013. The next prime is 247899089. The reversal of 247899017 is 710998742.

247899017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243484816 + 4414201 = 15604^2 + 2101^2 .

It is a cyclic number.

It is not a de Polignac number, because 247899017 - 2² = 247899013 is a prime.

It is a super-2 number, since 2×247899017² = 122907845259132578, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (247899013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123949508 + 123949509.

It is an arithmetic number, because the mean of its divisors is an integer number (123949509).

Almost surely, 2^247899017 is an apocalyptic number.

It is an amenable number.

247899017 is a deficient number, since it is larger than the sum of its proper divisors (1).

247899017 is an equidigital number, since it uses as much as digits as its factorization.

247899017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 247899017 is about 15744.8092081168. The cubic root of 247899017 is about 628.1908430833.

The spelling of 247899017 in words is "two hundred forty-seven million, eight hundred ninety-nine thousand, seventeen".