7489428689 has 2 divisors, whose sum is σ = 7489428690. Its totient is φ = 7489428688.

The previous prime is 7489428673. The next prime is 7489428691. The reversal of 7489428689 is 9868249847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7209368464 + 280060225 = 84908^2 + 16735^2 .

It is an emirp because it is prime and its reverse (9868249847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7489428689 - 2⁴ = 7489428673 is a prime.

Together with 7489428691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7489425689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3744714344 + 3744714345.

It is an arithmetic number, because the mean of its divisors is an integer number (3744714345).

Almost surely, 2^7489428689 is an apocalyptic number.

It is an amenable number.

7489428689 is a deficient number, since it is larger than the sum of its proper divisors (1).

7489428689 is an equidigital number, since it uses as much as digits as its factorization.

7489428689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55738368, while the sum is 65.

The square root of 7489428689 is about 86541.4853639571. The cubic root of 7489428689 is about 1956.5137151867.

The spelling of 7489428689 in words is "seven billion, four hundred eighty-nine million, four hundred twenty-eight thousand, six hundred eighty-nine".