247133349 has 10 divisors (see below), whose sum is σ = 369174630. Its totient is φ = 164755512.

The previous prime is 247133339. The next prime is 247133353. The reversal of 247133349 is 943331742.

It can be written as a sum of positive squares in only one way, i.e., 243828225 + 3305124 = 15615^2 + 1818^2 .

It is not a de Polignac number, because 247133349 - 2¹³ = 247125157 is a prime.

It is a super-2 number, since 2×247133349² = 122149784375911602, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247133339) 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 9 ways as a sum of consecutive naturals, for example, 1525434 + ... + 1525595.

It is an arithmetic number, because the mean of its divisors is an integer number (36917463).

Almost surely, 2^247133349 is an apocalyptic number.

It is an amenable number.

247133349 is a deficient number, since it is larger than the sum of its proper divisors (122041281).

247133349 is an equidigital number, since it uses as much as digits as its factorization.

247133349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051041 (or 3051032 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 247133349 is about 15720.4754699087. The cubic root of 247133349 is about 627.5434266756.

The spelling of 247133349 in words is "two hundred forty-seven million, one hundred thirty-three thousand, three hundred forty-nine".