109011943 has 2 divisors, whose sum is σ = 109011944. Its totient is φ = 109011942.

The previous prime is 109011919. The next prime is 109011979. The reversal of 109011943 is 349110901.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109011943 - 2⁹ = 109011431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109011043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54505971 + 54505972.

It is an arithmetic number, because the mean of its divisors is an integer number (54505972).

Almost surely, 2^109011943 is an apocalyptic number.

109011943 is a deficient number, since it is larger than the sum of its proper divisors (1).

109011943 is an equidigital number, since it uses as much as digits as its factorization.

109011943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 109011943 is about 10440.8784592102. The cubic root of 109011943 is about 477.7030639475.

The spelling of 109011943 in words is "one hundred nine million, eleven thousand, nine hundred forty-three".