109981389 has 8 divisors (see below), whose sum is σ = 167590720. Its totient is φ = 62846496.

The previous prime is 109981373. The next prime is 109981409. The reversal of 109981389 is 983189901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109981389 - 2⁴ = 109981373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109981309) 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, 2618584 + ... + 2618625.

It is an arithmetic number, because the mean of its divisors is an integer number (20948840).

Almost surely, 2^109981389 is an apocalyptic number.

It is an amenable number.

109981389 is a deficient number, since it is larger than the sum of its proper divisors (57609331).

109981389 is an equidigital number, since it uses as much as digits as its factorization.

109981389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237219.

The product of its (nonzero) digits is 139968, while the sum is 48.

The square root of 109981389 is about 10487.2011995575. The cubic root of 109981389 is about 479.1149620261.

The spelling of 109981389 in words is "one hundred nine million, nine hundred eighty-one thousand, three hundred eighty-nine".