109117889 has 2 divisors, whose sum is σ = 109117890. Its totient is φ = 109117888.

The previous prime is 109117787. The next prime is 109117901. The reversal of 109117889 is 988711901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108847489 + 270400 = 10433^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 109117889 - 2¹² = 109113793 is a prime.

It is not a weakly prime, because it can be changed into another prime (109117189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54558944 + 54558945.

It is an arithmetic number, because the mean of its divisors is an integer number (54558945).

Almost surely, 2^109117889 is an apocalyptic number.

It is an amenable number.

109117889 is a deficient number, since it is larger than the sum of its proper divisors (1).

109117889 is an equidigital number, since it uses as much as digits as its factorization.

109117889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 44.

The square root of 109117889 is about 10445.9508423121. The cubic root of 109117889 is about 477.8577697546.

The spelling of 109117889 in words is "one hundred nine million, one hundred seventeen thousand, eight hundred eighty-nine".