67838929 has 2 divisors, whose sum is σ = 67838930. Its totient is φ = 67838928.

The previous prime is 67838923. The next prime is 67838933. The reversal of 67838929 is 92983876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52417600 + 15421329 = 7240^2 + 3927^2 .

It is a cyclic number.

It is not a de Polignac number, because 67838929 - 2¹⁵ = 67806161 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (67838923) 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, 33919464 + 33919465.

It is an arithmetic number, because the mean of its divisors is an integer number (33919465).

Almost surely, 2^67838929 is an apocalyptic number.

It is an amenable number.

67838929 is a deficient number, since it is larger than the sum of its proper divisors (1).

67838929 is an equidigital number, since it uses as much as digits as its factorization.

67838929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 67838929 is about 8236.4390970856. The cubic root of 67838929 is about 407.8429827207.

The spelling of 67838929 in words is "sixty-seven million, eight hundred thirty-eight thousand, nine hundred twenty-nine".