68093489 has 2 divisors, whose sum is σ = 68093490. Its totient is φ = 68093488.

The previous prime is 68093429. The next prime is 68093491. The reversal of 68093489 is 98439086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44890000 + 23203489 = 6700^2 + 4817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68093489 is a prime.

Together with 68093491, 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 (68093419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34046744 + 34046745.

It is an arithmetic number, because the mean of its divisors is an integer number (34046745).

Almost surely, 2^68093489 is an apocalyptic number.

It is an amenable number.

68093489 is a deficient number, since it is larger than the sum of its proper divisors (1).

68093489 is an equidigital number, since it uses as much as digits as its factorization.

68093489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 68093489 is about 8251.8779074826. The cubic root of 68093489 is about 408.3524783841.

The spelling of 68093489 in words is "sixty-eight million, ninety-three thousand, four hundred eighty-nine".