247140433 has 2 divisors, whose sum is σ = 247140434. Its totient is φ = 247140432.

The previous prime is 247140409. The next prime is 247140449. The reversal of 247140433 is 334041742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246898369 + 242064 = 15713^2 + 492^2 .

It is a cyclic number.

It is not a de Polignac number, because 247140433 - 2¹³ = 247132241 is a prime.

It is a super-2 number, since 2×247140433² = 122156787246854978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247140403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123570216 + 123570217.

It is an arithmetic number, because the mean of its divisors is an integer number (123570217).

Almost surely, 2^247140433 is an apocalyptic number.

It is an amenable number.

247140433 is a deficient number, since it is larger than the sum of its proper divisors (1).

247140433 is an equidigital number, since it uses as much as digits as its factorization.

247140433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 247140433 is about 15720.7007795454. The cubic root of 247140433 is about 627.5494227302.

The spelling of 247140433 in words is "two hundred forty-seven million, one hundred forty thousand, four hundred thirty-three".