109955917 has 2 divisors, whose sum is σ = 109955918. Its totient is φ = 109955916.

The previous prime is 109955903. The next prime is 109955921. The reversal of 109955917 is 719559901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63457156 + 46498761 = 7966^2 + 6819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109955917 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109955927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54977958 + 54977959.

It is an arithmetic number, because the mean of its divisors is an integer number (54977959).

Almost surely, 2^109955917 is an apocalyptic number.

It is an amenable number.

109955917 is a deficient number, since it is larger than the sum of its proper divisors (1).

109955917 is an equidigital number, since it uses as much as digits as its factorization.

109955917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127575, while the sum is 46.

The square root of 109955917 is about 10485.9866965393. The cubic root of 109955917 is about 479.0779710446.

The spelling of 109955917 in words is "one hundred nine million, nine hundred fifty-five thousand, nine hundred seventeen".