247297049 has 2 divisors, whose sum is σ = 247297050. Its totient is φ = 247297048.

The previous prime is 247297031. The next prime is 247297093. The reversal of 247297049 is 940792742.

It is an a-pointer prime, because the next prime (247297093) can be obtained adding 247297049 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201640000 + 45657049 = 14200^2 + 6757^2 .

It is a cyclic number.

It is not a de Polignac number, because 247297049 - 2⁸ = 247296793 is a prime.

It is a super-2 number, since 2×247297049² = 122311660888216802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247297549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123648524 + 123648525.

It is an arithmetic number, because the mean of its divisors is an integer number (123648525).

Almost surely, 2^247297049 is an apocalyptic number.

It is an amenable number.

247297049 is a deficient number, since it is larger than the sum of its proper divisors (1).

247297049 is an equidigital number, since it uses as much as digits as its factorization.

247297049 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 44.

The square root of 247297049 is about 15725.6811935127. The cubic root of 247297049 is about 627.6819567247.

The spelling of 247297049 in words is "two hundred forty-seven million, two hundred ninety-seven thousand, forty-nine".