68209459 has 2 divisors, whose sum is σ = 68209460. Its totient is φ = 68209458.

The previous prime is 68209433. The next prime is 68209489. The reversal of 68209459 is 95490286.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68209459 - 2²¹ = 66112307 is a prime.

It is a super-3 number, since 3×68209459³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (68209489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34104729 + 34104730.

It is an arithmetic number, because the mean of its divisors is an integer number (34104730).

Almost surely, 2^68209459 is an apocalyptic number.

68209459 is a deficient number, since it is larger than the sum of its proper divisors (1).

68209459 is an equidigital number, since it uses as much as digits as its factorization.

68209459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 68209459 is about 8258.9018035087. The cubic root of 68209459 is about 408.5841685632.

The spelling of 68209459 in words is "sixty-eight million, two hundred nine thousand, four hundred fifty-nine".