93981109 has 2 divisors, whose sum is σ = 93981110. Its totient is φ = 93981108.

The previous prime is 93981091. The next prime is 93981131. The reversal of 93981109 is 90118939.

Together with previous prime (93981091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87478609 + 6502500 = 9353^2 + 2550^2 .

It is a cyclic number.

It is not a de Polignac number, because 93981109 - 2⁵ = 93981077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93981169) 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, 46990554 + 46990555.

It is an arithmetic number, because the mean of its divisors is an integer number (46990555).

Almost surely, 2^93981109 is an apocalyptic number.

It is an amenable number.

93981109 is a deficient number, since it is larger than the sum of its proper divisors (1).

93981109 is an equidigital number, since it uses as much as digits as its factorization.

93981109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 93981109 is about 9694.3854369424. The cubic root of 93981109 is about 454.6531333732.

The spelling of 93981109 in words is "ninety-three million, nine hundred eighty-one thousand, one hundred nine".