109940 has 24 divisors (see below), whose sum is σ = 241920. Its totient is φ = 41888.

The previous prime is 109937. The next prime is 109943. The reversal of 109940 is 49901.

It is an interprime number because it is at equal distance from previous prime (109937) and next prime (109943).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109943) 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, 341 + ... + 579.

It is an arithmetic number, because the mean of its divisors is an integer number (10080).

2¹⁰⁹⁹⁴⁰ is an apocalyptic number.

109940 is a gapful number since it is divisible by the number (10) 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 109940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120960).

109940 is an abundant number, since it is smaller than the sum of its proper divisors (131980).

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

109940 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (109939) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (269).

109940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 109940 is about 331.5720132942. The cubic root of 109940 is about 47.9054853137.

The spelling of 109940 in words is "one hundred nine thousand, nine hundred forty".