109947089 has 4 divisors (see below), whose sum is σ = 125653824. Its totient is φ = 94240356.

The previous prime is 109947077. The next prime is 109947127. The reversal of 109947089 is 980749901.

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, and also an emirpimes, since its reverse is a distinct semiprime: 980749901 = 5641 ⋅173861.

It is not a de Polignac number, because 109947089 - 2⁴ = 109947073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109947059) 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 3 ways as a sum of consecutive naturals, for example, 7853357 + ... + 7853370.

It is an arithmetic number, because the mean of its divisors is an integer number (31413456).

Almost surely, 2^109947089 is an apocalyptic number.

It is an amenable number.

109947089 is a deficient number, since it is larger than the sum of its proper divisors (15706735).

109947089 is an equidigital number, since it uses as much as digits as its factorization.

109947089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15706734.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 109947089 is about 10485.5657453473. The cubic root of 109947089 is about 479.0651495017.

The spelling of 109947089 in words is "one hundred nine million, nine hundred forty-seven thousand, eighty-nine".