8629242389 has 2 divisors, whose sum is σ = 8629242390. Its totient is φ = 8629242388.

The previous prime is 8629242371. The next prime is 8629242403. The reversal of 8629242389 is 9832429268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5262341764 + 3366900625 = 72542^2 + 58025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8629242389 is a prime.

It is a super-4 number, since 4×8629242389⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 8629242389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8629242319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4314621194 + 4314621195.

It is an arithmetic number, because the mean of its divisors is an integer number (4314621195).

Almost surely, 2^8629242389 is an apocalyptic number.

It is an amenable number.

8629242389 is a deficient number, since it is larger than the sum of its proper divisors (1).

8629242389 is an equidigital number, since it uses as much as digits as its factorization.

8629242389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 53.

The square root of 8629242389 is about 92893.7155516992. The cubic root of 8629242389 is about 2051.1191500886.

The spelling of 8629242389 in words is "eight billion, six hundred twenty-nine million, two hundred forty-two thousand, three hundred eighty-nine".