7243479889 has 2 divisors, whose sum is σ = 7243479890. Its totient is φ = 7243479888.

The previous prime is 7243479797. The next prime is 7243479917. The reversal of 7243479889 is 9889743427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4961793600 + 2281686289 = 70440^2 + 47767^2 .

It is a cyclic number.

It is not a de Polignac number, because 7243479889 - 2⁹ = 7243479377 is a prime.

It is not a weakly prime, because it can be changed into another prime (7243479689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3621739944 + 3621739945.

It is an arithmetic number, because the mean of its divisors is an integer number (3621739945).

Almost surely, 2^7243479889 is an apocalyptic number.

It is an amenable number.

7243479889 is a deficient number, since it is larger than the sum of its proper divisors (1).

7243479889 is an equidigital number, since it uses as much as digits as its factorization.

7243479889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 61.

The square root of 7243479889 is about 85108.6358074197. The cubic root of 7243479889 is about 1934.8579498533.

The spelling of 7243479889 in words is "seven billion, two hundred forty-three million, four hundred seventy-nine thousand, eight hundred eighty-nine".