109941191 has 2 divisors, whose sum is σ = 109941192. Its totient is φ = 109941190.

The previous prime is 109941187. The next prime is 109941197. The reversal of 109941191 is 191149901.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109941191 - 2² = 109941187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109941197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54970595 + 54970596.

It is an arithmetic number, because the mean of its divisors is an integer number (54970596).

Almost surely, 2^109941191 is an apocalyptic number.

109941191 is a deficient number, since it is larger than the sum of its proper divisors (1).

109941191 is an equidigital number, since it uses as much as digits as its factorization.

109941191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 35.

The square root of 109941191 is about 10485.2844978093. The cubic root of 109941191 is about 479.0565830272.

The spelling of 109941191 in words is "one hundred nine million, nine hundred forty-one thousand, one hundred ninety-one".