123867199 has 2 divisors, whose sum is σ = 123867200. Its totient is φ = 123867198.

The previous prime is 123867197. The next prime is 123867217. The reversal of 123867199 is 991768321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123867199 - 2¹ = 123867197 is a prime.

It is a super-3 number, since 3×123867199³ (a number of 25 digits) contains 333 as substring.

Together with 123867197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123867197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61933599 + 61933600.

It is an arithmetic number, because the mean of its divisors is an integer number (61933600).

Almost surely, 2^123867199 is an apocalyptic number.

123867199 is a deficient number, since it is larger than the sum of its proper divisors (1).

123867199 is an equidigital number, since it uses as much as digits as its factorization.

123867199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 46.

The square root of 123867199 is about 11129.5641873346. The cubic root of 123867199 is about 498.4850129313.

The spelling of 123867199 in words is "one hundred twenty-three million, eight hundred sixty-seven thousand, one hundred ninety-nine".