123984937939 has 8 divisors (see below), whose sum is σ = 126394647120. Its totient is φ = 121597036416.

The previous prime is 123984937841. The next prime is 123984937949. The reversal of 123984937939 is 939739489321.

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 123984937939 - 2²⁹ = 123448067027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123984937949) 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, 5440434 + ... + 5463175.

It is an arithmetic number, because the mean of its divisors is an integer number (15799330890).

Almost surely, 2^123984937939 is an apocalyptic number.

123984937939 is a deficient number, since it is larger than the sum of its proper divisors (2409709181).

123984937939 is a wasteful number, since it uses less digits than its factorization.

123984937939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10903829.

The product of its digits is 79361856, while the sum is 67.

The spelling of 123984937939 in words is "one hundred twenty-three billion, nine hundred eighty-four million, nine hundred thirty-seven thousand, nine hundred thirty-nine".