109247689 has 4 divisors (see below), whose sum is σ = 112771840. Its totient is φ = 105723540.

The previous prime is 109247647. The next prime is 109247707. The reversal of 109247689 is 986742901.

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: 986742901 = 6301 ⋅156601.

It is a cyclic number.

It is not a de Polignac number, because 109247689 - 2⁷ = 109247561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109241689) 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, 1762029 + ... + 1762090.

It is an arithmetic number, because the mean of its divisors is an integer number (28192960).

Almost surely, 2^109247689 is an apocalyptic number.

It is an amenable number.

109247689 is a deficient number, since it is larger than the sum of its proper divisors (3524151).

109247689 is an equidigital number, since it uses as much as digits as its factorization.

109247689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524150.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 109247689 is about 10452.1619294766. The cubic root of 109247689 is about 478.0471715146.

The spelling of 109247689 in words is "one hundred nine million, two hundred forty-seven thousand, six hundred eighty-nine".