109423440 has 160 divisors (see below), whose sum is σ = 430805760. Its totient is φ = 25007616.

The previous prime is 109423439. The next prime is 109423481. The reversal of 109423440 is 44324901.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11502 + ... + 18738.

It is an arithmetic number, because the mean of its divisors is an integer number (2692536).

Almost surely, 2^109423440 is an apocalyptic number.

109423440 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 109423440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215402880).

109423440 is an abundant number, since it is smaller than the sum of its proper divisors (321382320).

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

109423440 is a wasteful number, since it uses less digits than its factorization.

109423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7266 (or 7254 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 109423440 is about 10460.5659502725. The cubic root of 109423440 is about 478.3033851867.

The spelling of 109423440 in words is "one hundred nine million, four hundred twenty-three thousand, four hundred forty".