123867899 has 4 divisors (see below), whose sum is σ = 131154264. Its totient is φ = 116581536.

The previous prime is 123867871. The next prime is 123867911. The reversal of 123867899 is 998768321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123867899 - 2⁸ = 123867643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123867899.

It is not an unprimeable number, because it can be changed into a prime (123867829) 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, 3643157 + ... + 3643190.

It is an arithmetic number, because the mean of its divisors is an integer number (32788566).

Almost surely, 2^123867899 is an apocalyptic number.

123867899 is a deficient number, since it is larger than the sum of its proper divisors (7286365).

123867899 is an equidigital number, since it uses as much as digits as its factorization.

123867899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7286364.

The product of its digits is 1306368, while the sum is 53.

The square root of 123867899 is about 11129.5956350624. The cubic root of 123867899 is about 498.4859519446.

The spelling of 123867899 in words is "one hundred twenty-three million, eight hundred sixty-seven thousand, eight hundred ninety-nine".