109389621 has 8 divisors (see below), whose sum is σ = 159112224. Its totient is φ = 66296720.

The previous prime is 109389617. The next prime is 109389667. The reversal of 109389621 is 126983901.

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

It is a cyclic number.

It is not a de Polignac number, because 109389621 - 2² = 109389617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109389621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109389521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1657386 + ... + 1657451.

It is an arithmetic number, because the mean of its divisors is an integer number (19889028).

Almost surely, 2^109389621 is an apocalyptic number.

109389621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

109389621 is a deficient number, since it is larger than the sum of its proper divisors (49722603).

109389621 is a wasteful number, since it uses less digits than its factorization.

109389621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314851.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 109389621 is about 10458.9493258166. The cubic root of 109389621 is about 478.2541044326.

The spelling of 109389621 in words is "one hundred nine million, three hundred eighty-nine thousand, six hundred twenty-one".