123983999 has 8 divisors (see below), whose sum is σ = 125075328. Its totient is φ = 122896800.

The previous prime is 123983971. The next prime is 123984001. The reversal of 123983999 is 999389321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123983999 - 2¹² = 123979903 is a prime.

It is a super-3 number, since 3×123983999³ (a number of 25 digits) contains 333 as substring.

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 123983999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123983099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94649 + ... + 95949.

It is an arithmetic number, because the mean of its divisors is an integer number (15634416).

Almost surely, 2^123983999 is an apocalyptic number.

123983999 is a deficient number, since it is larger than the sum of its proper divisors (1091329).

123983999 is a wasteful number, since it uses less digits than its factorization.

123983999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065.

The product of its digits is 944784, while the sum is 53.

The square root of 123983999 is about 11134.8102363713. The cubic root of 123983999 is about 498.6416450856.

The spelling of 123983999 in words is "one hundred twenty-three million, nine hundred eighty-three thousand, nine hundred ninety-nine".