109558993 has 2 divisors, whose sum is σ = 109558994. Its totient is φ = 109558992.

The previous prime is 109558987. The next prime is 109559027. The reversal of 109558993 is 399855901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82591744 + 26967249 = 9088^2 + 5193^2 .

It is an emirp because it is prime and its reverse (399855901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109558993 - 2⁹ = 109558481 is a prime.

It is not a weakly prime, because it can be changed into another prime (109558903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54779496 + 54779497.

It is an arithmetic number, because the mean of its divisors is an integer number (54779497).

Almost surely, 2^109558993 is an apocalyptic number.

It is an amenable number.

109558993 is a deficient number, since it is larger than the sum of its proper divisors (1).

109558993 is an equidigital number, since it uses as much as digits as its factorization.

109558993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 437400, while the sum is 49.

The square root of 109558993 is about 10467.0431832490. The cubic root of 109558993 is about 478.5008099939.

The spelling of 109558993 in words is "one hundred nine million, five hundred fifty-eight thousand, nine hundred ninety-three".