4243549117 has 2 divisors, whose sum is σ = 4243549118. Its totient is φ = 4243549116.

The previous prime is 4243549109. The next prime is 4243549133. The reversal of 4243549117 is 7119453424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2900253316 + 1343295801 = 53854^2 + 36651^2 .

It is a cyclic number.

It is not a de Polignac number, because 4243549117 - 2³ = 4243549109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4243549117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4243549157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121774558 + 2121774559.

It is an arithmetic number, because the mean of its divisors is an integer number (2121774559).

Almost surely, 2^4243549117 is an apocalyptic number.

It is an amenable number.

4243549117 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243549117 is an equidigital number, since it uses as much as digits as its factorization.

4243549117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 4243549117 is about 65142.5292493314. The cubic root of 4243549117 is about 1618.9859422396.

The spelling of 4243549117 in words is "four billion, two hundred forty-three million, five hundred forty-nine thousand, one hundred seventeen".