109404089 has 2 divisors, whose sum is σ = 109404090. Its totient is φ = 109404088.

The previous prime is 109404073. The next prime is 109404091. The reversal of 109404089 is 980404901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100801600 + 8602489 = 10040^2 + 2933^2 .

It is a cyclic number.

It is not a de Polignac number, because 109404089 - 2⁴ = 109404073 is a prime.

It is a Sophie Germain prime.

Together with 109404091, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (109404289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54702044 + 54702045.

It is an arithmetic number, because the mean of its divisors is an integer number (54702045).

Almost surely, 2^109404089 is an apocalyptic number.

It is an amenable number.

109404089 is a deficient number, since it is larger than the sum of its proper divisors (1).

109404089 is an equidigital number, since it uses as much as digits as its factorization.

109404089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 109404089 is about 10459.6409594211. The cubic root of 109404089 is about 478.2751883200.

The spelling of 109404089 in words is "one hundred nine million, four hundred four thousand, eighty-nine".