68209239 has 16 divisors (see below), whose sum is σ = 104970240. Its totient is φ = 38589600.

The previous prime is 68209181. The next prime is 68209261. The reversal of 68209239 is 93290286.

It is not a de Polignac number, because 68209239 - 2⁷ = 68209111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68209197 and 68209206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68209289) 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 in 15 ways as a sum of consecutive naturals, for example, 13959 + ... + 18200.

It is an arithmetic number, because the mean of its divisors is an integer number (6560640).

Almost surely, 2^68209239 is an apocalyptic number.

68209239 is a deficient number, since it is larger than the sum of its proper divisors (36761001).

68209239 is a wasteful number, since it uses less digits than its factorization.

68209239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32270.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 68209239 is about 8258.8884845359. Note that the first 3 decimals coincide. The cubic root of 68209239 is about 408.5837292858.

The spelling of 68209239 in words is "sixty-eight million, two hundred nine thousand, two hundred thirty-nine".