109289647 has 2 divisors, whose sum is σ = 109289648. Its totient is φ = 109289646.

The previous prime is 109289623. The next prime is 109289659. The reversal of 109289647 is 746982901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109289647 - 2¹⁵ = 109256879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109289597 and 109289606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109286647) 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 as a sum of consecutive naturals, namely, 54644823 + 54644824.

It is an arithmetic number, because the mean of its divisors is an integer number (54644824).

Almost surely, 2^109289647 is an apocalyptic number.

109289647 is a deficient number, since it is larger than the sum of its proper divisors (1).

109289647 is an equidigital number, since it uses as much as digits as its factorization.

109289647 is an odious number, because the sum of its binary digits is odd.

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

The square root of 109289647 is about 10454.1688813602. The cubic root of 109289647 is about 478.1083637654.

The spelling of 109289647 in words is "one hundred nine million, two hundred eighty-nine thousand, six hundred forty-seven".