247548869 has 2 divisors, whose sum is σ = 247548870. Its totient is φ = 247548868.

The previous prime is 247548823. The next prime is 247548877. The reversal of 247548869 is 968845742.

247548869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246804100 + 744769 = 15710^2 + 863^2 .

It is a cyclic number.

It is not a de Polignac number, because 247548869 - 2¹⁶ = 247483333 is a prime.

It is a super-2 number, since 2×247548869² = 122560885086358322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 247548869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247548269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123774434 + 123774435.

It is an arithmetic number, because the mean of its divisors is an integer number (123774435).

Almost surely, 2^247548869 is an apocalyptic number.

It is an amenable number.

247548869 is a deficient number, since it is larger than the sum of its proper divisors (1).

247548869 is an equidigital number, since it uses as much as digits as its factorization.

247548869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 53.

The square root of 247548869 is about 15733.6858046676. The cubic root of 247548869 is about 627.8949384405.

The spelling of 247548869 in words is "two hundred forty-seven million, five hundred forty-eight thousand, eight hundred sixty-nine".