67838999 has 2 divisors, whose sum is σ = 67839000. Its totient is φ = 67838998.

The previous prime is 67838977. The next prime is 67839007. The reversal of 67838999 is 99983876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67838999 - 2¹⁶ = 67773463 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67838929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33919499 + 33919500.

It is an arithmetic number, because the mean of its divisors is an integer number (33919500).

Almost surely, 2^67838999 is an apocalyptic number.

67838999 is a deficient number, since it is larger than the sum of its proper divisors (1).

67838999 is an equidigital number, since it uses as much as digits as its factorization.

67838999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 59.

The square root of 67838999 is about 8236.4433464937. The cubic root of 67838999 is about 407.8431229990.

The spelling of 67838999 in words is "sixty-seven million, eight hundred thirty-eight thousand, nine hundred ninety-nine".