247118849 has 8 divisors (see below), whose sum is σ = 255760008. Its totient is φ = 238602240.

The previous prime is 247118813. The next prime is 247118857. The reversal of 247118849 is 948811742.

247118849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 17808400 + 229310449 = 4220^2 + 15143^2 .

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 247118849 - 2⁸ = 247118593 is a prime.

It is a super-2 number, since 2×247118849² = 122135451062169602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (247112849) 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, 27092 + ... + 35045.

It is an arithmetic number, because the mean of its divisors is an integer number (31970001).

Almost surely, 2^247118849 is an apocalyptic number.

It is an amenable number.

247118849 is a deficient number, since it is larger than the sum of its proper divisors (8641159).

247118849 is an equidigital number, since it uses as much as digits as its factorization.

247118849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62275.

The product of its digits is 129024, while the sum is 44.

The square root of 247118849 is about 15720.0142811640. The cubic root of 247118849 is about 627.5311531969.

The spelling of 247118849 in words is "two hundred forty-seven million, one hundred eighteen thousand, eight hundred forty-nine".