68209429 has 4 divisors (see below), whose sum is σ = 68372640. Its totient is φ = 68046220.

The previous prime is 68209343. The next prime is 68209433. The reversal of 68209429 is 92490286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68209429 - 2¹⁷ = 68078357 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68209391 and 68209400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68209459) 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, 80977 + ... + 81814.

It is an arithmetic number, because the mean of its divisors is an integer number (17093160).

Almost surely, 2^68209429 is an apocalyptic number.

It is an amenable number.

68209429 is a deficient number, since it is larger than the sum of its proper divisors (163211).

68209429 is a wasteful number, since it uses less digits than its factorization.

68209429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163210.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 68209429 is about 8258.8999872864. The cubic root of 68209429 is about 408.5841086617.

The spelling of 68209429 in words is "sixty-eight million, two hundred nine thousand, four hundred twenty-nine".