109081949 has 2 divisors, whose sum is σ = 109081950. Its totient is φ = 109081948.

The previous prime is 109081937. The next prime is 109081961. The reversal of 109081949 is 949180901.

It is a balanced prime because it is at equal distance from previous prime (109081937) and next prime (109081961).

It can be written as a sum of positive squares in only one way, i.e., 107536900 + 1545049 = 10370^2 + 1243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109081949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109081549) 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, 54540974 + 54540975.

It is an arithmetic number, because the mean of its divisors is an integer number (54540975).

Almost surely, 2^109081949 is an apocalyptic number.

It is an amenable number.

109081949 is a deficient number, since it is larger than the sum of its proper divisors (1).

109081949 is an equidigital number, since it uses as much as digits as its factorization.

109081949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 109081949 is about 10444.2304168378. The cubic root of 109081949 is about 477.8053002213.

The spelling of 109081949 in words is "one hundred nine million, eighty-one thousand, nine hundred forty-nine".