109645440 has 64 divisors (see below), whose sum is σ = 349500960. Its totient is φ = 29238272.

The previous prime is 109645397. The next prime is 109645441. The reversal of 109645440 is 44546901.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (109645441) 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, 26634 + ... + 30473.

Almost surely, 2^109645440 is an apocalyptic number.

109645440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109645440 is an abundant number, since it is smaller than the sum of its proper divisors (239855520).

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

109645440 is an equidigital number, since it uses as much as digits as its factorization.

109645440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57129 (or 57117 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 109645440 is about 10471.1718541909. The cubic root of 109645440 is about 478.6266298332.

The spelling of 109645440 in words is "one hundred nine million, six hundred forty-five thousand, four hundred forty".