123938988 has 24 divisors (see below), whose sum is σ = 291110400. Its totient is φ = 41038800.

The previous prime is 123938951. The next prime is 123938989. The reversal of 123938988 is 889839321.

It is a self number, because there is not a number n which added to its sum of digits gives 123938988.

It is not an unprimeable number, because it can be changed into a prime (123938989) 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 in 7 ways as a sum of consecutive naturals, for example, 32388 + ... + 36011.

It is an arithmetic number, because the mean of its divisors is an integer number (12129600).

Almost surely, 2^123938988 is an apocalyptic number.

It is an amenable number.

123938988 is an abundant number, since it is smaller than the sum of its proper divisors (167171412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123938988 is a wasteful number, since it uses less digits than its factorization.

123938988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68557 (or 68555 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 123938988 is about 11132.7888689223. The cubic root of 123938988 is about 498.5812956968.

The spelling of 123938988 in words is "one hundred twenty-three million, nine hundred thirty-eight thousand, nine hundred eighty-eight".