68844239 has 4 divisors (see below), whose sum is σ = 72467640. Its totient is φ = 65220840.

The previous prime is 68844229. The next prime is 68844241. The reversal of 68844239 is 93244886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68844239 - 2¹² = 68840143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68844239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68844229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811672 + ... + 1811709.

It is an arithmetic number, because the mean of its divisors is an integer number (18116910).

Almost surely, 2^68844239 is an apocalyptic number.

68844239 is a deficient number, since it is larger than the sum of its proper divisors (3623401).

68844239 is a wasteful number, since it uses less digits than its factorization.

68844239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623400.

The product of its digits is 331776, while the sum is 44.

The square root of 68844239 is about 8297.2428553104. The cubic root of 68844239 is about 409.8477304873.

It can be divided in two parts, 68844 and 239, that multiplied together give a triangular number (16453716 = T₅₇₃₆).

The spelling of 68844239 in words is "sixty-eight million, eight hundred forty-four thousand, two hundred thirty-nine".