109989615 has 8 divisors (see below), whose sum is σ = 175983408. Its totient is φ = 58661120.

The previous prime is 109989601. The next prime is 109989617. The reversal of 109989615 is 516989901.

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

It is not a de Polignac number, because 109989615 - 2⁴ = 109989599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109989617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3666306 + ... + 3666335.

It is an arithmetic number, because the mean of its divisors is an integer number (21997926).

Almost surely, 2^109989615 is an apocalyptic number.

109989615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

109989615 is a deficient number, since it is larger than the sum of its proper divisors (65993793).

109989615 is an equidigital number, since it uses as much as digits as its factorization.

109989615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7332649.

The product of its (nonzero) digits is 174960, while the sum is 48.

The square root of 109989615 is about 10487.5933845664. The cubic root of 109989615 is about 479.1269067786.

The spelling of 109989615 in words is "one hundred nine million, nine hundred eighty-nine thousand, six hundred fifteen".