109028749 has 2 divisors, whose sum is σ = 109028750. Its totient is φ = 109028748.

The previous prime is 109028743. The next prime is 109028839. The reversal of 109028749 is 947820901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86769225 + 22259524 = 9315^2 + 4718^2 .

It is a cyclic number.

It is not a de Polignac number, because 109028749 - 2³ = 109028741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109028741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54514374 + 54514375.

It is an arithmetic number, because the mean of its divisors is an integer number (54514375).

Almost surely, 2^109028749 is an apocalyptic number.

It is an amenable number.

109028749 is a deficient number, since it is larger than the sum of its proper divisors (1).

109028749 is an equidigital number, since it uses as much as digits as its factorization.

109028749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 109028749 is about 10441.6832455309. The cubic root of 109028749 is about 477.7276113042.

The spelling of 109028749 in words is "one hundred nine million, twenty-eight thousand, seven hundred forty-nine".