103989912 has 64 divisors (see below), whose sum is σ = 283584000. Its totient is φ = 31584384.

The previous prime is 103989883. The next prime is 103989913. The reversal of 103989912 is 219989301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103989913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22539 + ... + 26757.

It is an arithmetic number, because the mean of its divisors is an integer number (4431000).

Almost surely, 2^103989912 is an apocalyptic number.

103989912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103989912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141792000).

103989912 is an abundant number, since it is smaller than the sum of its proper divisors (179594088).

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

103989912 is a wasteful number, since it uses less digits than its factorization.

103989912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320 (or 4316 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 103989912 is about 10197.5444102980. The cubic root of 103989912 is about 470.2517317548.

It can be divided in two parts, 1039 and 89912, that added together give a triangular number (90951 = T₄₂₆).

The spelling of 103989912 in words is "one hundred three million, nine hundred eighty-nine thousand, nine hundred twelve".