68939429 has 16 divisors (see below), whose sum is σ = 79161600. Its totient is φ = 59507136.

The previous prime is 68939417. The next prime is 68939477. The reversal of 68939429 is 92493986.

It is not a de Polignac number, because 68939429 - 2⁸ = 68939173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68939329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17747 + ... + 21279.

It is an arithmetic number, because the mean of its divisors is an integer number (4947600).

Almost surely, 2^68939429 is an apocalyptic number.

It is an amenable number.

68939429 is a deficient number, since it is larger than the sum of its proper divisors (10222171).

68939429 is a wasteful number, since it uses less digits than its factorization.

68939429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644.

The product of its digits is 839808, while the sum is 50.

The square root of 68939429 is about 8302.9771166733. The cubic root of 68939429 is about 410.0365404673.

The spelling of 68939429 in words is "sixty-eight million, nine hundred thirty-nine thousand, four hundred twenty-nine".