109664993 has 2 divisors, whose sum is σ = 109664994. Its totient is φ = 109664992.

The previous prime is 109664987. The next prime is 109665013. The reversal of 109664993 is 399466901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109662784 + 2209 = 10472^2 + 47^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109664993 is a prime.

It is not a weakly prime, because it can be changed into another prime (109664953) 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, 54832496 + 54832497.

It is an arithmetic number, because the mean of its divisors is an integer number (54832497).

Almost surely, 2^109664993 is an apocalyptic number.

It is an amenable number.

109664993 is a deficient number, since it is larger than the sum of its proper divisors (1).

109664993 is an equidigital number, since it uses as much as digits as its factorization.

109664993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 109664993 is about 10472.1054712030. The cubic root of 109664993 is about 478.6550792007.

The spelling of 109664993 in words is "one hundred nine million, six hundred sixty-four thousand, nine hundred ninety-three".