109478749 has 2 divisors, whose sum is σ = 109478750. Its totient is φ = 109478748.

The previous prime is 109478711. The next prime is 109478773. The reversal of 109478749 is 947874901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109056249 + 422500 = 10443^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 109478749 - 2¹¹ = 109476701 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109470749) 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, 54739374 + 54739375.

It is an arithmetic number, because the mean of its divisors is an integer number (54739375).

Almost surely, 2^109478749 is an apocalyptic number.

It is an amenable number.

109478749 is a deficient number, since it is larger than the sum of its proper divisors (1).

109478749 is an equidigital number, since it uses as much as digits as its factorization.

109478749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 109478749 is about 10463.2093069001. The cubic root of 109478749 is about 478.3839591051.

The spelling of 109478749 in words is "one hundred nine million, four hundred seventy-eight thousand, seven hundred forty-nine".