109549389 has 4 divisors (see below), whose sum is σ = 146065856. Its totient is φ = 73032924.

The previous prime is 109549369. The next prime is 109549399. The reversal of 109549389 is 983945901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 109549389 - 2⁷ = 109549261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109549369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18258229 + ... + 18258234.

It is an arithmetic number, because the mean of its divisors is an integer number (36516464).

Almost surely, 2^109549389 is an apocalyptic number.

It is an amenable number.

109549389 is a deficient number, since it is larger than the sum of its proper divisors (36516467).

109549389 is an equidigital number, since it uses as much as digits as its factorization.

109549389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36516466.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 109549389 is about 10466.5843998890. The cubic root of 109549389 is about 478.4868277062.

The spelling of 109549389 in words is "one hundred nine million, five hundred forty-nine thousand, three hundred eighty-nine".